190results about How to "Solve the allocation problem" patented technology

A distributed web crawler system is suitable for the field of network information collection and comprises a management portal, a central node server and a distributed sub-node server, wherein the management portal is a Web interface provided for an administrator by the crawler system and can be used for viewing the logs of the central node server and the distributed sub-node server, setting and adding themes, updating a URL (uniform resource locator) seed of a theme, configuring a theme capture frequency parameter, and controlling a crawler state; the central node server and the distributed sub-node server are the main bodies of the system and can be used for operating the themes, learning a data extractor, analyzing pages and storing target pages. According to the distributed web crawler system, the capture of different themes can be accommodated by a crawler, the webpage capture speed is increased, and the quality meets the user requirement.

The invention relates to radio communication field and discloses an area load control method, system and device, which balances the resident loads for the entire network and reduces the possibility of the access blocking. The invention processes a statistics for the quantity of the vacant terminals and balances the vacant terminals according to the quantity of the vacant terminal in the areas. The areas can be the areas of small area level and can be the areas of TA level. The core network device can balance the load for the vacant terminals and the base station can balance the load for the vacant terminals.

The invention discloses a method, equipment and a system for obtaining dynamic passwords to generate keys, which relates to the field of data security. The invention can ensure the privacy and the security of the information, can improve the distribution and management efficiency of key generation by dynamic passwords, and can bring the convenience for manufacturers to produce dynamic password cards. The method for obtaining dynamic passwords to generate keys provided by the embodiment of the invention comprises the following steps: generating public keys and private keys of the dynamic password cards; sending the public keys of the dynamic password cards to a certification server supporting a digital certificate issuing system; receiving digital certificates of the certification server sent by the certification server; using the private keys of the dynamic password cards to obtain the dynamic passwords from the certification server for generating the keys, and carrying out digital signature by the certification server on the keys generated through the dynamic passwords; verifying the digital signature of the keys generated through the dynamic passwords according to the obtained digital certificates of the certification server, and storing the dynamic passwords to generate the keys when the verification succeeds. The invention is applicable to occasions adopting telecommunication intelligent cards for certification of the dynamic passwords.

The present invention discloses a lake-reservoir cyanobacteria water bloom recognition method based on remote sensing monitoring and evidence fusion technology improvement, and belongs to the technical field of environmental projects. The method comprises: establishing a remote sensing inversion model, determining cyanobacteria water bloom breaking-out degree recognition indexes, pre-treating monitoring data, assigning belief function values, and recognizing monitoring area cyanobacteria water bloom. According to the present invention, an ensemble learning Bagging algorithm is fused into regression analysis of the remote sensing inversion model (ie., the normalization vegetation index model) to correct parameters of the model to obtain the corrected remote sensing inversion model so as to improve fitting accuracy; the problem of selection of indexes for lake-reservoir cyanobacteria water bloom recognition and value ranges thereof is solved; the problems of selection of the monitoring area and pretreatment of the monitoring data are solved; the problem of assignment of the belief function values is solved; and effective cyanobacterial water bloom recognition is achieved.

The present invention provides mobile terminal distributing IP address method in mobile terminal through AP directly accessing packet data network structure. When mobile terminal directly accessing grouped data service through AP, AG controlling AP managing mobile terminal IP address distribution, AP capable of being used as DHCP client-side and DHCP relay, through configuring static IP address pool method to realize IP address distribution in mobile terminal directly accessing grouped data service. Said invention provided method solves mobile terminal IP address distribution.

Provided are terminal equipment and a multi-system input switching method. The terminal equipment comprises at least one input unit, a first storage unit which is used for storing a first operating system, a second storage unit which is used for storing a second operating system, and a display unit which is used for displaying the content of the first operation system and the second operating system. The input switching method comprises the steps of receiving pre-inputs from the at least one input unit, judging the first operating system or the second operating system to be an input receiver in accordance with the pre-inputs, providing follow-up inputs from the at least one input unit for the first operating system when the first operating system is judged to be the input receiver, and providing the follow-up inputs from the at least one input unit for the second operating system when the second operating system is judged to be the input receiver.

The invention discloses an OFDM-based channel assignment method in a two-layer network. The method is based on coexistence of macro base stations and femtocells, the macro base stations and the femtocells share a spectral platform, each femtocell in the network corresponds to an initial color list, each color list represents a sub-channel, a sub-channel set available for each femtocell is determined on the premise of satisfaction of signal to interference plus noise ratio (SINR) requirements by macro users, and then all available frequency spectrum resources are assigned to each user dynamically according to constructed interference figures of the femtocells. The OFDM-based channel assignment method in the two-layer network reduces the interference between the macro base stations and the femtocells and among the femtocells, and simultaneously, throughput of the femtocells is improved to the greatest extent under the satisfaction of requirements of the macro users.

The invention provides a management method of a hierarchical tree key in a wireless sensor network (WSN). The method comprises the steps of: before distributing sensor nodes, distributing an SF (session key), a hash function used for encryption and a unique ID to each node; establishing a WSN in a clustering mode by the nodes and generating a hierarchical tree simultaneously; in the hierarchical tree, calculating a lower node key according to an upper node key; during communication, recording all IDs of the nodes passing through, calculating a key of a child node by a father node, and calculating the keys of each node by adopting the father key and the child key as communication keys and base station dynamic condition; and issuing key updating by a base station and re-calculating the keys in the tree. The nodes with different importance is differentially protected, the cost of network maintenance is reduced, the network storage content is reduced, the contradiction between the safety requirement and expandability, and short network lifetime is overcome, and the network lifetime is simultaneously prolonged under the case of ensuring the safe communication of the nodes.

The invention relates to a charge pump capable of solving problems of charge distribution and current mismatching. The charge pump is provided with a charge pump core circuit, a current copy feedback circuit, and a seventh NMOS transistor. The charge pump core circuit comprises a differential charge pump input structure, a first PMOS transistor, a first NMOS transistor and an operational amplifier, wherein the differential charge pump input structure consists of a sixth PMOS transistor, a seventh PMOS transistor, an eighth PMOS transistor and a ninth PMOS transistor. A grid of a third NMOS transistor is connected with a positive input end of the operational amplifier; the source and grid of a third PMOS transistor are connected with the sources and grids of the first PMOS transistor and a second PMOS transistor respectively; the source and grid of a fifth NMOS transistor are connected with the sources and grids of the first NMOS transistor and a second NMOS transistor respectively; the grid of a fourth NMOS transistor is connected with the drain of a fifth PMOS transistor; and the drains and sources of the third PMOS transistor and the fourth PMOS transistor are in short circuit. The grid and source of the seventh NMOS transistor are connected with the grid and source of the first NMOS transistor. The charge pump cannot generate ripple vibration, can realize perfect charging and discharging current matching, and has the advantages of simple structure and convenient operation.

An inter-frequency handover of a UE connection is performed in which the frequency of the uplink connection from the UE to a base station remains the same and the frequency of the downlink connection from the base station to UE changes from a first downlink frequency to a second downlink frequency (figure 4). A request for the handover is transmitted from the base station (401). The request containing information indicating the second downlink frequency and information indicating that the uplink frequency remains the same. In response to the request, the physical layer of the uplink connection is maintained while changing the downlink frequency from the first downlink frequency to the second downlink frequency (403).

The invention relates to a method based on edge computing and an Actor-Critic algorithm. The specific steps are as follows: in the vehicle networking communication system, the user sequence is {1, 2,..., k,..., K}, and there are K users; the subchannel sequence is {1, 2,..., n,..., N} with N subchannels; fog access node sequence {1, 2,..., m,... M}, total M access nodes, computing power sequence of incoming nodes {1, 2,... Cm,..., cM}; task sequence {1, 2,... tk,..., tK} uploaded by user, total tK tasks; a non-orthogonal multiple access (NOMA) mode is adopted to connect the user to the vehiclenetworking communication system. The task uploaded by the user carries out edge calculation and returns the calculation result to the user; taking advantage of actor-Critic algorithm to optimize theresource allocation method and get the best resource allocation method. The invention combines the non-orthogonal multiple access, the edge calculation and the reinforcement learning, effectively solves the problem of huge access quantity existing in the vehicle networking, simultaneously reduces the time delay in the whole communication process, obtains the best resource distribution mode under different environments, and improves the energy utilization efficiency.

The present invention provides a task planning method of multistatic heterogeneous unmanned aerial vehicle cooperative reconnaissance, and relates to the unmanned aerial vehicle task planning field. The method comprises: constructing a multistatic heterogeneous unmanned aerial vehicle reconnaissance task model, constructing a cuckoo solution vector in the model, calculating the target function of all the current bird nests and outputting a maximum target function value after completion of initialization, and after updating and adding Gauss disturbance, obtaining a final task assignment. The task planning method of multistatic heterogeneous unmanned aerial vehicle cooperative reconnaissance employs the multistatic heterogeneous unmanned aerial vehicle to perform cooperative reconnaissance task arrangement, take reconnaissance revenue maximization as a target function, consider the resource constraint and the multistatic heterogeneous unmanned aerial vehicle constraint to establish a mathematical model, perform discrete improvement and performance improvement of the Cuckoo search and establish a mapping relation between the algorithm and the mathematical model so as to effectively solve the reconnaissance task arrangement problem.

The invention provides a lubricating oil circuit structure for heavy-duty transmission gear bearings of an aeroengine. According to the lubricating oil circuit structure for the heavy-duty transmission gear bearings of the aeroengine, a cavity is designed in one end of a shaft hole of a hollow gear shaft which is mounted in a gearbox through the bearings, a lubricating oil flow distributor is arranged in the cavity, and a lubricating oil nozzle is arranged in the position, opposite to the lubricating oil flow distributor, of the gearbox; pressure lubricating oil enters the distributor from the nozzle, part of the lubricating oil is sputtered back through the distributor and squeezed into a near-end bearing lubricating surface under the effect of centrifugal force so as to lubricate and cool the near-end bearing, and the other part of the lubricating oil enters the shaft hole of the hollow gear shaft through the orifice of a through flow hole of the distributor, flows towards the far-end bearing and is squeezed into a far-end bearing lubricating surface under the effect of the centrifugal force so as to lubricate and cool the far-end bearing. By adoption of the lubricating oil circuit structure for the heavy-duty transmission gear bearings of the aeroengine, the structure of the gearbox is simplified, the weight of the gearbox is reduced, and the gear bearing lubricating effect and the reliability of a gear transmission system are improved.

The invention discloses a channel cluster tracking method. The method comprises the following steps of: acquiring multi-channel impulse response data and relative geographic information of two transceiving ends, extracting multi-channel space time multi-dimensional parameter information from the acquired multi-channel impulse response data, clustering multiple channels by using a preset clustering algorithm, acquiring space time multi-dimensional parameters of a clustered center, calculating multi-channel component distance (MCD) value of each cluster of adjacent moments, estimating the change range of the MCD value of each cluster according to the acquired relative geographic information, acquiring the MCD threshold value of each corresponding cluster, and executing cluster tracking according to the acquired MCD value of each cluster and the calculated MCD value of each cluster. The invention also discloses a channel cluster tracking device at the same time. The method and the devicecan solve the source problem of living clusters when the clusters are fused, and meanwhile, improve the precision of a tracking algorithm.

The invention relates to a method for distributing inter-satellite chains of a low-earth-orbit satellite network. The comprehensive weighting distribution method well solves the problem that a satellite needs to make a choice when selecting visual satellites, and different communication needs can be met by changing a weighting coefficient through the comprehensive weighting method based on inter-satellite distance, the distance change rate, visual time length and remaining channel (or bandwidth) resources. The comprehensive weighted chain distribution method based on chain stability is based on comprehensive weighting, and the stability of the inter-satellite chains is improved as much as possible through the method of increasing the average connection degree of the satellite network. The problem of inter-satellite chain distribution of low-earth-orbit satellites under the condition of limited wave beams is solved, and the built satellite network has small communication time delay when operating, is low in chain conversion and high in on-satellite resource utilization rate and has good chain stability.

The invention discloses a resource distribution and power control method of D2D communication in a millimeter wave cellular network. The problem that the millimeter wave communication is weak in penetrating power and easy to be blocked by a screen is solved. The resource distribution and power control method comprises the following steps: establishing a large-scale D2D communication model in a millimeter wave network, acquiring a candidate resource multiplexing packet when the system throughput is the maximum according to a cellular user SINR condition; further judging a SINR condition and a link interference condition needing to be satisfied by a D2D user and a base station based on the candidate resource multiplexing packet, and screening the candidate resource packet to obtain an approximate optimal resource multiplexing scheme; and finally adjusting transmitting power limit interference of a D2D pair through dynamic power control. Compared with the traditional solution scheme, thescheme provided by the invention is low in complexity, the resource distribution and interference control problem in the large-scale D2D communication can be effectively solved, the power consumptionis reduced, and the system performance is further improved.

The invention provides a computing resource and spectrum resource distribution method for fog computing in the Internet of Things. The method comprises the following steps: establishing a fog computing system model; initializing a quantum seed group and parameters, and measuring the quantum seeds to obtain the positions of the quantum seeds; calculating fitness values of all quantum seeds to obtain a global optimal position of the quantum seed group and selecting a quantum seed elite position set; updating quantum positions of all quantum seeds in the population according to a quantum seed sowing rule; measuring the quantum positions of all the updated quantum seeds to obtain corresponding positions, calculating a fitness value of each quantum seed, and updating a global optimal position and a quantum seed elite position set; if the number of iterations is smaller than the preset maximum number of iterations, returning to the fourth step; and otherwise, terminating iteration, and outputting the global optimal position of the quantum seed group to obtain a corresponding computing resource and spectrum resource distribution scheme. According to the method, the network energy efficiency optimization problem of fog computing in the Internet of Things can be solved.

The present invention provides an interface, method and communication system which can realize the consistency of the interface data. The interface and accounting system is connected with the client retention and detention system. Wherein, the invention comprises a file pretreatment module for performing the format pretreatment to the information files which is outputted from the accounting system and required by the client retention and detention system and transforming the file format into the distinguishable format of the file entering module; a file entering module which imports the file after format pretreatment into a temporary interface table, after the file entering is finished, the file entering module modifies the ready sign of the file in the database to the finished state; a task execution central control module which timely reads the ready signs of the files in the database, once the ready sign becomes the finished state, the task execution central control module activates the subsequent task processing of the files and coordinates the execution of the subsequent task, after the task is finished successfully, the task execution central control module recovers the ready signs of the files.

The invention discloses a dynamic distribution method for an IP address in a wireless local area network. The IP address is transmitted through an HELLO packet which is periodically broadcasted in a protocol, and each node creates a table to store the corresponding relation between the IP and the MAC, wherein when the node receives the HELLO packet, whether the IP address carried in the HELLO packet conflicts with that in the table or not is judged, if the IP address carried in the HELLO packet conflicts with that in the table, a conflict notice is sent to a conflict node, the conflict node regenerates an IP address, and the HELLO packet is discarded; otherwise, the HELLO packet is processed continuously. According to the dynamic distribution method, IP distribution and the L2MPM protocol are combined, and a dynamic IP distributing and conflict detecting and solving method is achieved. A new HELLO packet frame structure and a conflict notifying packet structure are adopted, and dynamic IP configuration in the WMN network based on the L2MPM protocol is achieved. The dynamic distribution method is simple, convenient to operate and capable of well solving the problems that in the prior art, the topology built based on the L2MPM protocol changes dynamically, the clustering for maintaining the network structure is large in workload, and the topology is not suitable for the network of which nodes move fast and topology changes fiercely.

The invention relates to a shared protection routing and spectrum allocation method and system considering joint fault probability constraints for reducing the fault risk of service requests in a spectral flexible optical network. The method comprises the following steps of firstly, initializing a spectral flexible optical network G(V, E, F); secondly, generating a group of service requests; and lastly, setting an adjustable parameter alpha and spectral maximum sharing degree, multi-objective optimization functions for shared protection routing and spectrum allocation based on the joint fault probability constraints, and a bandwidth flow conservation constraint condition for the service requests, a spectral consistency constraint condition, a spectral continuity constraint condition, a working path and shared protection path pair selection uniqueness constraint condition, a spectral gap occupation uniqueness constraint condition, a spectrum sharing constraint condition, a spectral gap maximum sharing degree constraint condition and a maximum tolerable fault probability threshold constraint condition which meet the multi-objective optimization functions, and obtaining an optimal solution of spectrum resource occupancy and joint fault probability.

The invention discloses a label reader-writer and data communication method and system of a radio frequency label, wherein the method comprises the following steps of: obtaining the ID (Identity) of the radio frequency label through a certification request by the label reader-writer; after the label reader-writer certifies that the radio frequency label is a legal label, computing a derived key of the radio frequency label according to a master key per se and the obtained ID; carrying out data interaction of the label reader-writer and the radio frequency label, wherein cryptograph data encrypted through the key are interacted for sensitive data; and directly carrying out data interaction for non-sensitive data. The system comprises an ID acquisition module, a key computation module and acommunication module which are arranged on the label reader-writer. The invention realizes the safety communication between the label reader-writer and the radio frequency label.

The invention provides an index segmenting equalization based big data cloud search platform and a method thereof, which can solve the problem that in an Apache Lucene engine based big data cloud search platform, it is difficult to reasonably and efficiently allocate index segments among nodes of a cluster. The big data cloud search platform and method can perform index segment allocation based on the load equalization principle, can allocate index segments with high content relevancy to different nodes to be supported according to the content relevancy of the allocated index segments. The big data cloud search platform and method can achieve equalization allocation of computing loads due to the fact the index segments are queried and invoked, among all the nodes, can void the problem of delay due to overload of a part of nodes in the cluster, and can suppress the phenomenon that a part of nodes are too idle.