102results about How to "Avoid duplicate transmission" patented technology

The invention relates to a resource allocation method suitable for mobile edge computing scenes. The method is used for realizing optimal task cache and uploading and downloading time allocation and low-complexity suboptimum task cache and uploading and downloading time allocation based on task cache and transmission optimization mechanisms, when the computation result of a to-be-executed task ofa mobile device has been cached by a base station, the mobile device downloads the computation result of the task from a base station, otherwise, the mobile device uploads the task to the base stationfor computation, and then downloads the computation result of the task from the base station, when multiple mobile devices upload the same task to the base station, the base station selects the mobile device with the best channel to achieve the uploading, when the multiple mobile devices download the computation result of the same task, the base station sends the computation result of the task ina multicast mode, and the mobile device having the worst channel just successfully receives the computation result. Compared with the prior art, the resource allocation method has the advantages of jointly optimizing the cache and uploading and downloading times and saving energy.

The invention discloses a virtual machine image management optimization method based on data de-duplication. The specific steps of the virtual machine image management optimization method based on the data de-duplication include that when a virtual machine image is uploaded, a fixed size partitioning method is adopted by a user end to divide an image file into a plurality of data blocks, the size of each data block is the same as the size of a cluster of a local file system, a mini disk (MD) 5 value of each data block is calculated, Socket programming technology is used, a finger print is sent to a server end, the server end searches the finger print and returns the result to the user end, whether the data blocks are sent is judged by the user end according to the result, and the network sources are saved; when the server end searches the finger print, by using a finger print filter and a finger print storage device, the memory usage amount and disk access amount are reduced; when the data are saved, the data blocks are directly stored in a complete cluster, the repetitive job of image renewing and segmentation is eliminated. The virtual machine image management optimization method based on the data de-duplication achieves a kernel mode file system of the online data de-duplication, reduces the disk storage amount and reduces internet consumption.

The invention provides a channel allocation mechanism suitable to be used by opportunistic routing to make the opportunistic routing make full use of multi-radio frequency multi-channel network resources. In the mechanism. a common channel distributing mode and a stream-based channel selection algorithm are adopted. By the algorithm, a channel interference status within the current neighboring range is collected, and the channel making path interference minimized is selected for each newly added stream to achieve purposes of balancing a channel resource load and maximizing throughput. The common channel allocation is no longer changed after the network is initialized, and is easy to implement; and by the stream-based channel selection, the repeated transmission problem which may be resulted from the use of different channels by a candidate node in the opportunistic routing in the negotiation process can be effectively prevented.

The invention relates to the database application technical field, discloses a distributed data synchronizing system and method. In the invention, the distributed data synchronizing system comprises a server main station and a plurality of server sub-stations; the server main station is a data sender; the server sub-stations are data receivers; or the server main station is the data receiver; the server sub-stations are the data senders; the distributed data synchronizing method comprises following steps that: the data sender detects the states of to-be-synchronized data in real time and only sends data updating logs to the data receivers according to a preset data format; the data receivers receive the data from the data sender in real time; the data items in the data updating logs are assigned to corresponding data items in the data receivers; and therefore, the data of the data receivers and the data sender are consistent. According to the system and the method of the invention, the data are updated timely; the pressure is balanced; the demand to the server is reduced; moreover, the data transmission quantity is low; the communication traffic is saved; and the communication load is relived.

A moving image file producing method includes: inputting an image material; inputting a scenario information; and producing a moving image file that contains the image material based on the scenario information.

The invention provides a sending method and a receiving method of multicast service information, a base station and a terminal, and relates to the field of communication. The sending method of the multicast service information comprises the steps of writing transmission control information of a multicast control channel of a multicast service into system information; and sending the system information to the terminal, thus allowing the terminal to receiving information on the multicast control channel according to the transmission control information. The transmission control information of the multicast control channel is sent in the system information, so that repeated transmission of the transmission control information in a PDCCH is avoided, in this way, signaling overheads of a physical layer is saved, and PDSCH receiving delays are reduced.

The embodiment of the invention provides a data transmission method and apparatus, a data storage method and apparatus, a server and a storage medium. The transmission method comprises the following steps: acquiring data to be transmitted, if sending conditions of the data to be transmitted are satisfied, determining the acquired data to be transmitted as batch data, and setting a unique batch identifier for the batch data; and sending a data transmission request. The storage method comprises the following steps: receiving a data transmission request; judging whether a stored identifier of a batch identifier exists locally; when the stored identifier of the batch identifier exists, determining that the batch data have been, wherein the data transmission request is a repeated transmission request; and when the stored identifier of the batch identifier does not exist, determining that the batch data are not stored; and storing the batch data, and adding the stored identifier for the batch identifier. By adoption of the data transmission method and the data storage method provided by the embodiment of the invention, the data transmission accuracy during large data size transmission can be improved.

A multi-carrier ratioless code transmission method based on a generalized frequency division multiplexing technology comprises channel coding, multi-carrier transmission and channel decoding, and specifically comprises the steps as follows: the channel decoding is performed at a receiving end through the multi-carrier transmission after the channel coding is performed at a sending end. The method solves the problems that data with a higher priority are coded repeatedly and the decoding efficiency is lower in the prior art, the reliability of the unequal error protection transmission is improved, the decoding efficiency can reach 0.9564, and the value of the performance parameter Rho can reach 0.90. According to the method, under the condition that the spectrum utilization rate is improved and the out-of-band radiation is reduced, data are subjected to unequal error protection, and particularly when the data with the priority are transmitted reliably, the protection for the data with the priority cannot be weakened, and the reliability of simulation data is improved.

The embodiment of the invention provides a data transmission method, device and system. The transmission bandwidth can be saved in an MLAN multicast scene. The method comprises the steps that a user plane functional entity receives a data packet from a source device, and the data packet carries multicast information; the user plane functional entity determines path downlink information of n multicast paths corresponding to the target mobile local area network MLAN; And the user plane functional entity sends the data packet to the corresponding n access devices through the n multicast paths corresponding to the path downlink information of the n multicast paths, wherein n is a positive integer.

The invention relates to a media file transfer method used to send a media file to a mobile terminal. The method comprises the following steps: (a) generating media files and storing in a memory unit, each media file comprising file header data, index data and page content blocks; (b) analyzing the media files in the memory unit according to the request of media file acquisition from the mobile terminal, and sending the file header data and the index data obtained after the analysis to the mobile terminal; (c) sending the page content blocks of the media file in order to the mobile terminal according to the media file download request from the mobile terminal. The invention also relates to a media file transfer system and the mobile terminal used in the method. The invention realizes the simultaneous reading and downloading of the media file, thereby reducing the wait time.

The invention relates to a wireless sensor network for an intelligent home, and particularly relates to a wireless sensor network based on a low-power consumption lossy network routing protocol and a computing method thereof. The wireless sensor network based on the low-power consumption lossy network routing protocol comprises sensor nodes and a gateway node. On the basis of the existing protocol, the remaining energy of the current node is measured through an energy supply and evaluation module, a phenomenon of bearing heavy forwarding and transmission tasks when the current energy is over low can be avoided, and network energy consumption of the same node is avoided. nodes in the network are layered, a certain sink node is selected to fuse data information and then transmit the data information, repeated data transmission is avoided, and the wireless sensor network efficiency is improved.

A deep neural network encryption inference method based on a homomorphic encryption technology comprises the following steps: transmitting to a cloud, combining a BN layer into a convolution layer by the cloud, carrying out homomorphic convolution operation to obtain a ciphertext feature map after the first layer of convolution operation, and transmitting to a client; after the client receives the data, a mark matrix being obtained through mark operation and transmitted to the cloud server, and after the cloud server receives the mark matrix, updating to obtain an input feature map of a second homomorphic convolution layer; performing second-layer homomorphic convolution operation to obtain a ciphertext feature map after the second-layer convolution operation, and transmitting the ciphertext feature map to the client; and repeating the above process until all the ciphertext feature maps after convolution layer operation are obtained. According to the method, the GPU is used for accelerating the homomorphic convolution operation process, and repeated transmission of data is avoided. Noise increase of the ciphertext can be reduced, the number of reasoning layers of the neural network is increased, and the calculation overhead of the ciphertext is greatly reduced.

A communication method for sending multimedia message includes indicating MM to be submitted to the other user in follow-up flow in indication information A when one multimedia message is submitted to MMSC by VASP, storing MM by MMSC and indication storage position of MM in indication information B returned back to VASP, using indication information c to indicate submitted MM to be already stored in MMSC and filling storage position of MM in MMSC at indication information D, verifying whether MM is on storage position or not by MMSC and returning response message back to VASP.

A 5/3 wavelet transformation method based on a multi-core processor HyperX platform is disclosed. The method comprises the following steps of converting an original image format; reading data according to rows; sending a data segment after left and right edge expansion; determining whether a data block is received for the first time; determining whether a receiving row number is 34; determining whether the receiving row number is 32; forming the data block; expanding upper and lower edges; carrying out 5/3 wavelet transformation; sending data to a receiving unit; writing into global memory according to rows; determining whether all the image data blocks are written into the global memory; and copying data in the global memory into a host hard disk. Through a data expansion edge of a prestored image block, repeated data transmission is reduced; through reading original data according to rows, address jumping is reduced and a reading speed is increased; through carrying out 5/3 wavelet transformation on the image block, an access speed of data is increased and image data repetition and global memory interaction are avoided.

This invention provides one dynamic traffic information distribution method based on GIS, which is characterized by the following: servo generates several background files and front views files according to map data; determining needed background image files and front views files; getting needed background image files and front view files and overlapping them on customer end.

The invention discloses a shear-warp-based parallel volume rendering system. The system is characterized in that: a distributed parallel visualization system is constructed on the basis of a high-speed shear-warp volume rendering algorithm aiming at the data visualization application requirement of a large-scale data field. Load balance between nodes and rendering speed are further improved by a task division method based on a scanning line and a load balance principle and an adaptive frame rate control strategy based on an army integrated air and missile defense (AIAMD) idea on the premise of guaranteeing quality of a visual image.

The invention discloses a method and a network device for preventing IPv6 notice attack. The method comprises that: receiving IPv6 notices with 0 type route header, judging whether the notices meet the repeating conditions of preset route header or not according to the addresses in the 0 type route header of the notices; if the answer is yes, the notices are specified as IPv6 attacking notices, the last IPv6 address in the 0 type route header addresses of the attacking notices replaces the target address of the attacking notices, and the residua sections inside the attacking notices are set as 0 so as to subtransmit the attacking notices to the last target node corresponding to the last IPv6 address in the 0 type route header. The invention avoids the IPv6 notices are repeatedly transmitted at the same route, also enables the non attacking aimed IPv6 notices transmitted from source node to be normally subtransmitted so as to improve the accuracy on preventing IPv6 notice attacks.

The invention relates to a risk control data processing method, device and system. The risk control data processing method specifically comprises the steps of: receiving a reported data packet sent bya terminal, reading the data identification bit in the reported data packet, when the data identification bit is an initial value, obtaining complete risk control data in the reported data packet andextracting fixed risk control data in the complete risk control data, calculating according to the fixed risk control data to obtain a check identification value, and sending the check identificationvalue to the terminal, so that the terminal sends the check identification value, instead of sending the fixed risk control data, when sending the reported data packet in the next time. The data volume in a risk control data transmission process can be reduced; and the network communication flow is reduced.