158results about How to "Reduce communication traffic" patented technology

The present invention provides systems and methods for obtaining information from a networked system utilizing a distributed web crawler. The distributed nature of clients of a server is leveraged to provide fast and accurate web crawling data. Information gathered by a server's web crawler is compared to data retrieved by clients of the server to update the crawler's data. In one instance of the present invention, data comparison is achieved by utilizing information disseminated via a search engine results page. In another instance of the present invention, data validation is accomplished by client dictionaries, emanating from a server, that summarize web crawler data. The present invention also facilitates data analysis by providing a means to resist spoofing of a web crawler to increase data accuracy.

The embodiment of the invention provides a method and equipment for migrating virtual machines based on a network data flow direction, and a cluster system. Each network flow monitoring module of the cluster system is used for interacting with a virtual machine monitor (VMM) to acquire network flow information of each virtual machine on the current service node; a virtual machine deployment adjustment module is used for acquiring network flow information of the virtual machines from network flow monitoring modules on a plurality of service nodes in the cluster system, determining a data flow direction relation among the virtual machines in the cluster system according to the network flow information, and transmitting a virtual machine migration command or outputting a corresponding virtual machine migration suggestion to the VMM on which the determined virtual machines to be migrated are operated according to a virtual machine migration strategy and the data flow direction relation among the virtual machines in the cluster system; and a VMM unit is used for receiving the virtual machine migration command transmitted by the virtual machine deployment adjustment module and migrating the virtual machines to be migrated to a target service node. By the method and the equipment, communication flow among the virtual machines in the cluster system can be effectively reduced, and network burden is reduced.

The invention relates to the field of automotive electronic technology composed of a plurality of electronic control units (ECUs), in particular to a method for application database file self-adaptation electronic control unit (ECU) message collection. A database computer (DBC) file supplied by a controller area network (CAN) bus is used for collecting a message system of ECU message dynamically, a remote service center converts the DBC file into a message collection control table which can be easily recognized by a car-mounted terminal, consequently the car-mounted terminal can quickly and selectively collect signal values in the ECU message needed by actual application, and therefore the phenomenon that redundancy message data are uploaded to a center system can be reduced. The method for application database file self-adaptation ECU message collection is outstanding in collecting car driver driving habit signal data application, communication flows can be reduced greatly under the condition that signal data are not compressed, a customizable and dynamically-expanding signal collection scheme can be supplied to an operational platform, and the problem of the complex DBC file of the car-mounted terminal can be solved.

The embodiment of the invention discloses an information pushing method and an information pushing system. The method comprises the following steps of: acquiring position information of a mobile terminal; screening information data in a database according to the position information to acquire screened information data, wherein the information data comprises an attention identifier; and sending the screened information data with higher attention to the mobile terminal. Through the method and the system, data information can be pushed to the mobile terminal based on geographical position information and attention information, so that the mobile terminal can automatically acquire screened local hot information and timely acquire local related information when moving to a certain place.

The invention relates to a method and system for recommending data, wherein the method comprises the steps of collecting the choice record of each user to each piece of to-be-recommended data, obtaining an average click rate of each user to the to-be-recommended data according to the choice record of each user to each piece of to-be-recommended data, obtaining an average popular degree of each piece of to-be-recommended to all users receiving recommendation, and obtaining the recommendation score of each piece of to-be-recommended according to the average popular degree or obtaining the recommendation score of each piece of to-be-recommended according to the choice record, the average click rate and the average popular degree. The method and the system are capable of automatically realizing differentiated processing on active users and non-active users, and hot videos and non-hot videos, and also capable of automatically digging out the popular statistical characteristics of data, for example, videos, and the recommendation results are not limited to the hottest data, for example, videos, so that lots of data, for example, videos, have a chance to be shown to different users.

The invention relates to a method and system for recommending data, wherein the method comprises the steps of obtaining a conditional probability value of a user to each data category according to historical records of the user to data categories, obtaining a read trend value of all users to each data category according to the historical records of all the users to the data categories, obtaining a historical preference value of one user to each data category in a time period according to the historical records of the user to the data categories, obtaining a predicted preference value of the user to each data category in a time period according to the conditional probability value, the read trend value and the historical preference value, and ranking the predicted preference values in the same time period from high to low, obtaining first M data categories highest in the predicted preference value and recommending the obtained M data categories to the user. The method and the system are capable of determining the data categories in which the user are interested, and obtaining data from the data categories and recommending the data to the user, and as a result, the method and the system are capable of recommending interested contents for the user more effectively, reducing invalid browsing of the user and improving the read satisfaction of the user.

The invention discloses a system for generating a unique identifier of a service point. Each service point is configured with a wireless router. The system comprises a local information server, a wireless router and a mobile local information receiver, wherein the service point information management module of the local information server is used by a service point manager to register service point information, classifies and stores the service point information in a local information database and generates an SSID for each service point, and the SSID comprises service point identification information and service point brief information; the wireless router is provided with the SSID to serve as the unique identifier of the belonged service point and broadcasts within the range of wireless communication; and the mobile local information receiver searches to obtain the unique identifier of the local service point broadcasted by the local wireless router as well as analyzes and translates service point identification information and the service point brief information in the unique identifier. The invention correspondingly discloses a method for generating the unique identifier of the service point. Thus, the system of the invention has the advantages of favorable instantaneity, favorable portability, strong communication capability and low communication cost in obtaining local information.

There is provided an image album creating system for creating an image album by receiving high image-quality images used for creating the image album after creating an image album sample by using low image-quality images, having a low image-quality image receiving section for receiving the low image-quality images of original images whose image quality has been lowered by an orderer of the image album from an image album orderer's apparatus, an image information receiving section for receiving image information concerning the original image that can be specified from the original image or in capturing the original image and cannot be specified from the low image-quality image by correlating with each one of the low image-quality images received by the low image-quality image receiving section, an image selecting section for selecting the low image-quality image to be allocated to the image album out of the low image-quality images received by the low image-quality image receiving section by analyzing the low image-quality image and the image information and a selected image notifying section for notifying the orderer of the image album of the low image-quality image selected by the image selecting section.

The invention provides a method and system for group communication, a group server and a group member device.The group server receives notification messages sent from the group member device, converges the notification messages to be sent to the same subscription device according to addresses of subscription devices and sends the converged notification messages to the subscription device. Through convergence of multiple messages to be sent to the subscription devices from the group member device, the interactive messages between the group member device and the subscription devices are reduced, and the communication flow between the group member device and the subscription devices is saved.

The invention provides a data transmission and remote control method for a self-organizing wireless internet of things (IoT) system. The data transmission and remote control method disclosed by the invention has the advantages that: firstly, communication code addresses and communication flows of a channel are saved in large quantities; secondly, the bottleneck of card number resource insufficiency of SIM (Subscriber Identity Module) communication cards is eliminated for the application of a mobile communication network on a IoT, and the access volume and the communication traffic volume of a terminal of the mobile communication network are sufficiently expanded; thirdly, an IP (Internet Protocol) address dose not need to be taken as a core of a self-organizing area network because a central base station and a PC (Personal Computer) machine are not connected with an external Internet, and therefore internal autonomous wireless communication is realized; and fourthly, even if a hacker invades the GSM/GPRS (Global System for Mobile Communication/General Packet Radio Service) mobile communication network, a user terminal can still not be invaded, and therefore the hacker and Trojan horse viruses can be effectively prevented from directly invading the user terminal.

A clustered computer system includes multiple computer systems (or nodes) coupled together via one or more networks that can become members of a group to work on a particular task. Each node includes a cluster engine, a cluster communication mechanism that includes a sliding send window, and one or more service tasks that process messages. The sliding send window allows a node to send out multiple messages without waiting for an individual acknowledgment to each message. The sliding send window also allows a node that received the multiple messages to send a single acknowledge message for multiple received messages. By using a sliding send window to communicate with other computer systems in the cluster, the communication traffic in the cluster is greatly reduced, thereby enhancing the overall performance of the cluster. In addition, the latency between multiple messages sent concurrently is dramatically reduced.

System and method of ad hoc on-demand routing by virtue of central control. A central controller of a network can communicate directly with a route-requesting network device regarding discovery of a data transmission path and perform route computation. A source network device may query the central controller with a unicast route request. In response, the central controller can identify a feasible route based on the topology information of the network. The central controller may also receive a broadcast route request as long with other network nodes. As a result, the source device can be offered to select from two resultant routes, one provided by the central controller in a centralized manner and the other provided by the destination device. Further, the central controller can be used specifically for computation of constrained routes by incorporating global constraints. The central controller may be a software defined network (SDN) controller.

Provided in the embodiments of the present invention are a data transmission method and system therefor, an electrical gateway and a master station. The method comprises: an electrical gateway receiving first data frames sent from a plurality of terminal devices respectively, the data portion of each such data frame including the reporting data of a terminal device; the electrical gateway analysing each first data frame and acquiring and storing the reporting data from each such frame; on the basis of the stored reporting data, the electrical gateway generating a second data frame, the data portion whereof includes a plurality of reporting data sets, then sending the second data frame to the master station. Under the technical solution of the present invention, an electrical gateway, by means of storing reporting data from terminal devices and transmitting in a single connection to a master station the reporting data from a plurality of terminal devices, reduces the number of communications between itself and the master station, thus also reducing wireless network traffic and limiting waste of network resources.

The invention relates to a data recommendation method and a data recommendation system. The method comprises the following steps: positive feedback data and negative feedback data are acquired from historical behaviors of a user to data; the characteristic value of each data relative to each data characteristic is generated according to the characteristics of the data and preset data characteristics; the positive feedback data and the negative feedback data are randomly paired, and the interest weight of the user to each data characteristic is acquired according to the characteristic values of the positive feedback data and the negative feedback data as well as the paired positive feedback data and the paired negative feedback data; the interest value of the user to each data is acquired according to the characteristic value of the data and the interest weight of the user to each data characteristic; and the interest values are sorted from largest to smallest, and the first K data with the highest interest values is acquired and recommended to the user, wherein K is a positive integer. By adopting the data recommendation method and the data recommendation system of the invention, the problems of over fitting and user data sparsity caused by one-way absolute interest modeling can be solved, and the stickiness of users to the recommendation system and the robustness of the recommendation system are enhanced.

The invention discloses a fault recorder data processing method and a fault recorder data processing device; the method comprises the following steps: acquiring fault recorder data from each sampling channel, and storing the acquired fault recorder data in each sub-file according to the scheduled rule; judging whether the data value of the fault recorder data in the sub-file surpasses the preset value; if the data value of the fault recorder data in one sub-file surpasses the preset value, marking the sub-file; and uploading the sub-file with mark to the remote server. The processing method realizes the effective distinction of the data of fault recorder and improves the utility ratio of the fault recorder data; analytical judgment is applied to the fault recorder data and only the sub-file surpassing the preset value is uploaded, thereby reducing the communication transmission of the information network system and ensuring the real-time of the communication transmission; and the number of the sub-files stored in the remote server is decreased, thereby reducing the storage pressure of the storage system of the remote server.

The invention discloses a safety remote control system used for an electric vehicle, and a control method of the safety remote control system. The safety remote control system comprises a vehicle-mounted unit and a non-vehicle-mounted unit, wherein the vehicle-mounted unit and the non-vehicle-mounted unit are connected through a mobile data network; the non-vehicle-mounted unit comprises a remote platform server and a plurality of user terminals connected with the remote platform server; the vehicle-mounted unit comprises a data terminal and a centralized controller connected with the data terminal, and the centralized controller is further connected with a plurality of action execution units; the centralized controller comprises a complete vehicle control unit and a plurality of action control units connected with the complete vehicle control unit; each action control unit is connected with the corresponding action execution unit; and complete vehicle control unit is further connected with the data terminal. The safety remote control system simplifies and integrates vehicle-mounted control units into the independent centralized controller, thereby reducing the complexity of the structure and links of the safety remote control system, reducing failure links, and being simple and reliable.

The invention provides a closed fence drawing method and system. The method comprises the steps that a fence start point is marked on a tile map, and the fence start point is a corrected road point coordinate position on a road; click operations on the tile map are captured, a first optimal path is drawn, and the first optimal path is the optimal path between the coordinate position of each click operation and the coordinate position of the previous click operation; when the click operation is an end operation, the coordinate position of the click operation is used as a fence end point, a second optimal path is further drawn, and the second optimal path is the optimal path between the fence end point and the fence start point; a closed fence formed by the first optimal path and the second optimal path is obtained. The closed fence drawing method and system can enable users to conveniently, flexibly and accurately draw self-defined electronic fences.

The invention discloses a user voltage abnormality sensing method and system based on edge calculation, and relates to the field of electric power measurement. The method disclosed by the invention comprises: sensing the user power consumption condition by using metering automation terminals deployed in a distributed manner, reporting a terminal processing result to a master station system for processing, automatically judging, by the master station system when specific voltage data are collected according to the reporting result, and dynamically adjusting a collection task according to the communication capability to realize the quasi-real-time sensing of the user voltage abnormality condition. A user voltage abnormality sensing system based on edge calculation is established by using themethod disclosed by the invention, and by adopting the user voltage abnormality sensing method and system based on edge calculation disclosed by the invention, detailed voltage data of abnormal userscan be recorded and updated, and a graphical display interface is formed, thereby realizing the monitoring of a large number of users and facilitating the monitoring of abnormal data.

The invention discloses a 6LoWPAN-based intelligent fire-fighting service system for colleges and universities and a design method of the 6LoWPAN-based intelligent fire-fighting service system. The service system comprises a data acquisition layer, a data transmission layer, a data control layer and a system application layer, good interoperability of the 6LoWPAN can solve information isolation, the 6LoWPAN supports the intercommunication with other IEEE (Institute of Electrical and Electronic Engineers) 802.15. 4 equipment and supports the interconnection with other IP networks; through designing a data control layer based on fire-fighting big data, intelligentized analysis of data, intelligent control on fire-fighting equipment, a visual service platform is established; through analyzingand mining fire-fighting big data, the fire situation is predicted and a solution is formulated, the fire prevention and control efficiency is improved, the intelligence of a service platform is realized, the purposes of equipment management centralization, fire-fighting construction underlying data management intellectualization and management system platformization are achieved, and the systemhas the characteristics of high feasibility, convenience in networking and easiness in maintenance and upgrading.

A cache method for content identification based on message digests includes steps of performing hash computation of contents by utilizing MD5 (message digest 5) of the fifth edition of the message digest algorithm, acquiring message digests of the contents and then utilizing the message digests namely the hash values of the contents to identify each independent content in cache so as to substitute for an identification method utilizing uniform resource locator (URL) to identify the contents between original cache proxies, separating content information from the URL and then inquiring and transmitting the contents by the aid of identification. The cache method utilizing cache coordination control strategies based on the identification method separates the content information from the URL, so that cache information quantity of cache space is increased, and cache utilization rate is increased while communication flows among various caches is reduced evidently.

The invention discloses an identity authentication method and system without CA. The method comprises the following steps: receiving a master station public key in master station asymmetric keys and a pre-stored first signature of the master station public key sent by a master station after receiving an identity authentication instruction; performing secondary signature on the master station public key sent by the master station after receiving the identity authentication instruction by using a security chip private key to obtain a second signature of the master station public key; when the two signatures are the same, generating a first random number; encrypting the first random number by using the master station public key, and sending an encryption result of the first random number to the master station; receiving a second random number sent by the master station; and when the first random number and the second random number are the same, judging that the master station passes the identity authentication, and sending an identity authentication pass result to the master station. According to the identity authentication method and system disclosed by the invention, the participation of an online CA is not required in an authentication process, thereby reducing the communication flow, eliminating the role of the third party CA and reducing the complexity of interaction.