44results about How to "Reduce data conflicts" patented technology

The present disclosure provides a method, system, and device for inquiry response mapping for determining a cybersecurity risk level of an entity. To manage and/or evaluate a cybersecurity risk level based on a relationship between a first entity and a second entity, questionnaires (e.g., requests or inquires) are often exchanged between two entities. One or more aspects of the present disclosure provide populating data sets (e.g., questionnaires) indicative of risk level for the first entity or the second entity. One or more other aspects of the present disclosure further provide determining a cybersecurity risk level of an entity by mapping responses to a plurality of inquiry sets directed to the first entity or the second entity.

Wireless communication networks utilize various communication protocols to exchange data between wireless network devices. Overlapping communication frequencies between data exchange protocols present a collision problem when data transmissions interfere with one another during wireless transit. A device for moderating transmission traffic in a wireless network where overlapping communication frequencies coexist is described to reduce or avoid interference caused by signal collisions.

A data processor operable to process data said data processor being operable to perform a plurality of processes or a plurality of applications on said data, said data processor comprising: a cache; a data storage unit operable to store a process or application identifier defining a process or application that is currently executing on said data processor on said data; wherein a data item storage location within said cache is indicated by an address, and said data processor further comprises: a hash value generator operable to generate a hash value from at least some of said bits of said address and at least some bits of said process or application identifier, said hash value having fewer bits than said address.

The invention discloses a LoRaWAN channel conflict avoidance method based on time division multiple access. The method comprises the following steps: an LoRa node sending a network access request data packet with a sending period of the LoRa node; the LoRa TDMA server sending a network access receiving data packet with a LoRa node multicast address and a multicast address serial number, when a sending period of the LoRa node arrives, a corresponding bit being set in an issued multicast data load, and after the LoRa node receives multicast data, judging whether uplink data are sent or not. When higher channel utilization rate is required in some application scenarios, the LoRaWAN time division multiple access mechanism realized by multicast can greatly improve the channel utilization rate.

Provided are an anti-collision system and method which address the mobility of radio frequency identification (RFID) tags. An RFID reader may transmit an identification start command to identify a plurality of RFID tags in an identification area of the RFID reader. The RFID tags compare the number of collisions of each RFID tag receiving the identification start command with a collision threshold C_th and attempt to be identified in a binary tree section of a frame or in a framed slotted ALOHA (FSA) section of the frame based on the comparison.

The invention discloses an RFID air interface anti-collision dispatching method, comprising the following steps: a reader transmits synchronous/ actuating signals, tags in the antenna control area of the reader receive the synchronous/ actuating signals and then a preset working frequency point is selected as the communication channel and a time slot in the data frame is randomly selected to transmit ID number; if the reader recognizes the ID number of the tags in the time slot, then the reader transmits a response signal to confirm the reception of the data of the tag, the tag does not transmit ID number within the scope of the reader any more after receiving the response; the reader adopted in the method is provided with an antenna array, any antenna of which is connected with a plurality of band-pass filters and all antennae are in the work state of transceiving signals, control areas of adjacent antennae do not overlap, the tags are provided with a plurality of working frequency points. The technical proposal of the invention is applicable to active and half active RFID system anti-collision dispatching method.

A multiple-access contention-free environment is disclosed for a local area network without using centralized control and without using information contained in the data. Data collisions are eliminated by buffering data from connected devices when the bus (or other common transportation media) is not available for immediate use. In one embodiment, the buffering is controlled by hubs that can accept information or hold it up for a period of time until the buffer clears. Buffer fullness can be used, if desired, as a measure as to which buffer to draw from first. When buffers are full, signals are sent to the stations to reduce their access to the network on a temporary basis.

The invention provides a multichannel transmission scheduling method based on time domain interference alignment in an underwater acoustic network. The method comprises the following steps: S1, network topology representation is carried out, a time slot division model is adopted, the whole message transmission process is divided into a plurality of time slots with the length of [tau], the transmission delay between nodes refers to the time required by message transmission between two nodes, a transmission delay matrix is used for representing a network topology structure, and elements in the matrix represent the number of the time slots required by message transmission between the nodes; S2, transmission scheduling is initialized, the states of the nodes are stored through a three-dimensional matrix, and transmission time slots of the nodes, selected transmission channels and destination nodes are determined; and S3, optimal transmission decision search is carried out, an optimal scheduling problem is searched to be regarded as a sequential decision problem, and the problem can be solved by using dynamic planning. In the multi-channel network model, a plurality of nodes can transmit messages in one time slot at the same time, so that data conflicts are reduced, and the network throughput is increased.

The invention provides a method and system for obtaining a log of a cloud storage system. Effective linkage enabling an inquiry user name to have access to an IP address of an accessed cloud storage server is established through a preset linkage factory and is stored through a Concurrent Hash Map. When a user needs to inquire a log file stored in the cloud storage system, the IP address and the inquiry user name of the accessed cloud storage server are obtained, whether the corresponding effective linkage exists in the linkage factory or not is inquired, if yes, the user directly has access to the corresponding cloud storage server according to the effective linkage in the Concurrent Hash Map, and the corresponding cloud storage log file is directly obtained. High concurrent inquiry access can be conducted by each user side and the occurrence probability of data collision and data loss is greatly reduced. The success rate of concurrent access can be increased, log data of the cloud storage system are obtained, and the occurrence probability of data loss caused by data collision is effectively reduced.

The invention discloses a multi-virtual equipment container networking method, and aims to solve the problem of single-point faults on virtual network bridge equipment and isolate different containernetworks so as to quickly position the faults. According to the technical scheme, a container network bottom layer environment composed of a control node and a container operation node is built firstly, a networking system is built in the container network bottom layer environment, that is, a virtual network bridge assembly and a networking assembly are installed in the container operation node, and a central database is installed in the control node; the networking assembly comprises an external interface, a container joining and exiting network module, a network information processing module, a VNI distribution module and a network host list updating module. The networking assembly and the virtual network bridge assembly are matched with each other to finish the networking work of creating a network, deleting the network, adding the container into the network and quitting of the container from the network. According to the invention, the fault of one functional unit can be preventedfrom influencing other functional units, and possible network faults can be quickly positioned.

The invention discloses an oil well condition data collection method and device. The method comprises that pieces of first service data whose data bulk is greater than a predetermined threshold and pieces of second service data whose data bulk is lower than a predetermined threshold are determined from oil well condition data; the pieces of first service data are separated and then combined with one or multiple of the pieces of second service data, and combined service data is distributed with a channel; and the combined service data is collected according to the distributed channel. The technical problem that service demands cannot be satisfied due to concurrency of multiple devices when LoRaWAN is applied to an oil field in related art can be solved.

The invention provides a communication method and a communication device. The communication method comprises: receiving a packet loss detection message generated by a second terminal based on a real-time transmission control protocol, wherein the type field of the packet loss detection message comprises application indication information of service data, and the application indication informationof the service data is used for indicating the application service type of a real-time transmission protocol packet; analyzing the packet loss repair custom content written in the application indication information to determine a subtype and a name; and when it is determined that the code of the sub-type is a preset value and the name is a preset character, feeding back a response message for confirming packet loss repair of the real-time transmission protocol packet to the second terminal. Through the technical scheme of the invention, packet loss repair can be carried out on the real-time transmission protocol packet for various application scenes, the data conflict in the packet loss repair process is reduced, the reliability of the packet loss repair scheme is improved, and the sensoryexperience of a user on audio and video resources is further improved.

The invention belongs to the technical field of integrated circuit design, and in particular relates to a data communication synchronization method based on a shared memory. In a multi-core SoC system based on bus interconnection, the data communication between multiple processors is generally realized by a shared memory. The method realizes the parallel GPDT algorithm by using the multi-core SoC and combines or adds up calculation results of the processors by using the share memory in matrix operations to construct a complete result. For communication processes requiring result combination, a shared address space is reasonably divided according to the workload for each processor so that the processors are corresponding to address space segments obtained after division in a one-to-one manner, and the calculation results are written into the corresponding address spaces; for communication processes requiring result add-up, the processers write data into the same address space in a covering manner. To avoid data collision, the invention provides the data synchronization method of identifier detection-identifier modification-storage access-identifier restoration, so that the data collision occurrence probability is greatly reduced.

The embodiment of the invention discloses a communication method and device. The method may comprise: in response to a data communication state of a gateway device, broadcasting a first beacon frame according to a set data communication rule in each period, the first beacon frame comprising first indication information indicating whether there is data to be transmitted to a terminal device; and in response to the first indication information indicating that the data is to be transmitted to the terminal equipment, transmitting the data to the terminal equipment specified by the first indication information. Therefore, the power consumption of the terminal equipment is reduced, the power consumption is reduced, and the data conflict is reduced, so that the network is not congested, the downlink data of the gateway can be transmitted in time, the response speed of the network is effectively improved, and a good optimization effect is achieved for a system with relatively high response time requirement.

The invention discloses a time service positioning network system for an underground chain-shaped large space of a coal mine, which is based on an ad hoc network base station which is linearly deployed in the underground chain-shaped large space of the coal mine, and adopts a base station level network internal time synchronization method which takes optical fiber time service as a main part and takes satellite time service as an auxiliary part. A time service positioning network system with a unified time reference in an ad hoc network base station is constructed, and through network construction, network stabilization and network application, by means of a base station level network internal clock synchronization method, a base station level network time reference is unified, and the network application positioning precision is improved; on the basis of an original underground communication ring network, a time service positioning network system suitable for an underground coal mine is integrated, and the network applicability is expanded.

The invention provides a data transmission method, a sending end and a data transmission system. The data transmission method comprises the following steps: sending obtained to-be-transmitted data to a message queue system; under the condition that the to-be-transmitted data fails to be transmitted, obtaining a partition routing relation table reported by a message queue system from a preset database; and transmitting the to-be-transmitted data to the corresponding first application node through a hypertext transfer protocol according to the partition routing relation table. Thus, when the transmission of the to-be-transmitted data fails, a transmitting end can obtain the partition routing relation table from the preset database, can determine which application node the to-be-transmitted data should be transmitted to according to the partition routing relation table, and directly transmits the to-be-transmitted data to the corresponding application node through the hypertext transfer protocol; when the transmission of the to-be-transmitted data fails, the user operation can be ensured not to be influenced, the data loss is avoided, the success rate of data transmission is improved, and the user experience is ensured.