507results about How to "Reduce processing delay" patented technology

The invention provides a polar code decoder and a polar code decoding method based on probability calculation. The polar code decoder comprises a probability sequence transformation module, a successive interference cancellation decoding module and a decision device, wherein the probability sequence transformation module is used for transforming received channel information into a first probability sequence; the successive interference cancellation decoding module is used for performing iteration processing on the first probability sequence based on a decision result of the decision device so as to obtain a second probability sequence and transforming the second probability sequence into a soft information value; and the decision device is used for performing hard decision on the soft information value and returning the decision result to the decoding module. According to the polar code decoder and the polar code decoding method based on probability calculation, the idea of the probability calculation is applied to the design of the polar code decoder, so that the processing delay of the polar code decoder can be reduced, and the total throughput of the polar code decoder can be increased greatly; and meanwhile, the polar code decoder and the polar code decoding method are simple in operation and good in universality and have better practical prospect.

The invention provides an LTE-based radio resource allocation method of Internet of vehicles. The method comprises the following steps: step S1, dividing priority for node communications according to node communication service characteristics and interference of node to a base station; step S2, building a position division model, wherein the base station dispatches D2D users in sequence according to the priority and selects candidate resource share nodes according to distance and link loss factors; and step S3, selecting cellular user resources with smallest interference in a region where the candidate resource share nodes are located as cellular link resources for D2D communication multiplex. the number of nodes needed to be fed back to the base station in the invention is obviously smaller than that in optimal algorithm, thereby largely reducing the load of the base station; in addition, the operating time of the algorithm used in the invention is obviously shorter than that of the optimal algorithm, thereby effectively reducing processing delay.

The invention relates to a service function chaining dynamic deployment method based on QoS (Quality of Service) guarantee and belongs to the technical field of mobile communication. According to themethod, on the basis of 5G network slicing, resources are flexibly configured through utilization of a software defined network and a network function virtualization technology. In order to improve the QoS of communication business in slice networks, a reliability requirement oriented service function chaining deployment model is established. According to the model, a service function chaining dynamic deployment scheme based on the QoS guarantee is designed with the purpose of minimizing the end-to-end delay. According to the scheme, node positions and reliability are taken into comprehensiveconsideration; virtual network functions are deployed through utilization of a novel node arrangement method, and the load of the networks is balanced. In a chaining mapping process, the QoS is improved through selection of the delay shortest path which satisfies a reliability requirement. According to the method, the end-to-end delay of the service function chaining is reduced, the deployment reliability is ensured, and a request acceptance rate and a resource utilization rate are improved.

The invention discloses a virtual shard network implementing method and a switch. The method includes the steps: after a connection with a virtual master controller of an OpenFlow controller is established, device resource capacity is reported to the virtual master controller; a shard network configuration file including channel configuration information and forwarded resource configuration information, issued by the virtual master controller and generated according to the device resource capacity and a current configuration strategy is received; forwarded resources are distributed for virtual shard networks according to the forwarded resource configuration information; after a connection with each virtual shard controller of the OpenFlow controller is established according to the channel configuration information, forwarded resources of the virtual shard networks corresponding to virtual slave controllers are reported to the virtual shard controllers, so that the virtual shard controllers generate control information according to the acquired forwarded resources; the control information issued by the virtual shard controllers is received and correlated to the forwarded resources of the virtual shard networks corresponding to the virtual shard controllers.

The invention discloses a multi-user network coding communication method with a high speed parallel encoding and decoding structure, which comprises the following steps: in a wireless relay network, multiple accessed user information is integrally interweaved by a relay node, serial / parallel conversion is carried out on the interweaved sequence, multiple groups of converted parallel data are input to a high speed parallel encoder to be encoded, and finally encoded data is broadcasted, thus realizing network encoding. A base station carries out teration decoding by means of a combined network-channel decoder according to original data broadcasted by users and data obtained by network encoding and channel encoding and forwarded by the relay node to obtain the original information of the users. The decoder of the base station comprises two parallel decoder groups, i.e. a user decoder group and a relay decoder group; iteration decoding is realized through transmitting soft information between two parallel decoder groups, thus not only recovering the original information of all accessed users but also improving decoding reliability and reducing decoding time delay. By adopting the method, the relay uplink transmission efficiency and the quality of transmission signal are improved.

The invention discloses a communication method under a wireless base station separation architecture, a functional entity and a wireless base station, and the method comprises the following steps: a distributed unit DU with all control panel protocol stacks of an air interface side receives a radio resource control RRC message sent by UE; the DU decodes and identifies the RRC message, and terminates the RRC protocol on the DU; the DU executes RRC connection control if the DU identifies that the message sent by the UE is the RRC message requesting for building a RRC connection, and the DU interacts with the UE to complete a RRC connection building flow. The invention also provides a corresponding functional entity and a wireless base station. With the method, the functional entity and the wireless base station, processing delay of a control plane flow can be reduced.

Embodiments of the present invention provide a deep packet inspection method, a device, and a coprocessor. The deep packet inspection method comprises: a transceiver module of a coprocessor receiving an original data packet sent by a general processor, and sending the original data packet to a processor core of the coprocessor; the processor core calling a sub-coprocessor of the coprocessor to perform application layer parsing on the original data packet, so as to obtain an application layer parsing result; and the processor core sending the parsing result to the general processor, so that the general processor processes the original data packet according to the parsing result. The deep packet inspection method and apparatus provided in the embodiments of the present invention reduce occupancy of a resource of a general processor and improve the operating speed.

The invention belongs to the technical field of a fog computing network, and particularly relates to a cloud / fog hybrid network architecture based on an SDN. The cloud / fog hybrid network architecture comprises an infrastructure layer, a fog computing layer, an SDN control layer and a cloud computing layer, wherein the infrastructure layer is used for sending a request of a user terminal and detection data of a medical device to the fog computing layer; the fog computing layer is connected with the infrastructure layer via an unshielded category 5e twisted pair, and is used for receiving and storing medical data uploaded by the user terminal, downloading an analysis result on a cloud server in an active caching manner, processing the medical data uploaded by a client according to the downloaded analysis result, and uploading the medical data to the cloud computing layer; the SDN control layer is connected with the fog computing layer via the unshielded category 5e twisted pair, and is used for controlling data forwarding of the fog computing layer; and the cloud computing layer is connected with the SDN control layer via an optical fiber, and is used for storing the collected medical data, carrying out analysis on the medical data, and processing the medical data received by the fog computing layer cooperatively with the fog computing layer.

The method is based on the relationship between the autocorrelation of OFDM modulation signal and the PAPR, uses matrices- partitioning interlace approach to rearrange the parallel input sequence of OFDM modulation signals in many times, and selects the sequence with lowest correlation to make the modulus value of its non-cyclic autocorrelation coefficient to be minimal so as to effectively reduce PAPA and the system processing time delay. The apparatus comprises a sending end and a receiving end. The sending end mainly comprises matrices-partitioning interlace unit, PAPR calculation comparator and output sequence selector. The receiving end comprises, the matrices-partitioning de-interlace unit. Said matrices-partitioning interlace unit comprises matrix forming unit, partitioning-point selecting unit, matrix partitioning unit, matrix reading unit and combinational unit. The matrices-partitioning de-interlace unit comprises: separation unit, matrices-partitioning combinational unit and matrix reading unit.

Disclosed herein in a preferred embodiment is an automated financial instrument brokerage system wherein a front end layer interacts with customers to generate activity requests for an intermediate layer. The intermediate layer preferably processes the activity requests and places financial instrument orders on a financial market if appropriate. A backend layer preferably provides data to the intermediate layer for processing activity requests. Multiple heterogeneous front end customer applications may be supported by the same intermediate layer. Further, multiple backend layer applications may interact with the intermediate layer in a manner transparent to the front end layer. Further, scalability can be achieved be partitioning various tasks of the intermediate layer onto separate servers, and more preferably on separate redundant servers. Load balancers may then be used in the intermediate layer to provide distributed access to these servers. Also disclosed herein is a caching technique whereby turnaround time for processing activity requests can be reduced by reducing the number of times that the intermediate layer needs to interact with the backend layer.

Disclosed is a power control method of a cognitive radio technique based on a normalized game model, in particular to an implementation scheme applying to a sending end power control of the cognitive radio technique. The cognitive radio adopting a software radio as an extended platform is a new intelligent wireless communication technique, and achieves a high reliability of the communication system and a high efficiency of the spectrum utilization through adjusting the transmission parameter in real time according to the perception of the wireless environment all around. The sending end power control of, the third part of the working process of the cognitive radio, is able to extend the working range of the system, improve the performance of the transceiver and rationalize the distribution of other resources. In a multi-user cognitive network, the sending end competes for the power resources in a distributed way while game theory is the most effective way to solve the problem. The method reduces the complexity of the system and shortens the processing delay due to a normalized utility function which simplifies the operation process in design.

The invention discloses a fast calculation method of discrete Fourier transformation (DFT) / inverse discrete Fourier transform (IDFT). The rapid calculation method comprises the following steps of: carrying out zero fill on a bit sequence to be transformed to enable the sequence length after the zero fill to accord with the processing range of a fast Fourier transform (FFT) / inverse fast Fourier transform (IFFT) processor; carrying out FFT / IFFT calculation on the sequence after zero fill by utilizing the FFT / IFFT processor, and resampling time domain / frequency domain of an FFT / IFFT calculation result sequence according to a sampling position determined by the sequence lengths before and after the zero fill; and outputting the resampling result as a DFT / IDFT result sequence. The invention also discloses a fast calculation device of DFT / IDFT. By adopting the invention, the calculation complexity of DFT / IDFT can be reduced, and the calculation speed can be improved.

This invention discloses a method and a system for transmitted data in a switch process including: a source eNodeB transmits SDU to a target eNodeB in order and tells it an end point of the transmitted data, the target eNodeB transmits the received SDU to user side according to the receiving sequence and tells it the end point of the transmitted data, the user side RLC delivers the received SDU to PDCP layer of the user side and tells it the end point of the transmitted data, the PDCP layer sequences SDU before the end point of the transmitted data with PDCP number and delivers it to a higher level, which can reduce time delay brought with transmission of down-line data.

A system includes an active system that executes processing, a standby system that is able to perform at least one of scale-up and scale-down, and a control apparatus that controls system switching to set the standby system undergoing the scaled up or scaled down as a new active system.

The invention discloses a communicating method of a power line carrier OFDM system. The communicating method comprises the steps of grouping K available subcarriers Ck to form L channel groups G1, wherein each of the subcarriers Ck exclusively belongs to one of the channel groups G1, data to be sent are allocated to the channel groups G1, and data transmission is performed in the channel groups G1 the data are allocated. The invention further discloses a communicating device of the power line carrier OFDM system based on the method. The excellent spectrum efficiency and transmission efficiency can be obtained through dynamic dispatching and channel resource allocation of the OFDM system, and one OFDM physical frame can bear data transmission meeting different transmission performance requirements simultaneously. In addition, the data distribution randomness is enhanced through grouping and interleaving of an interleaver, the problems of large depth and high processing delay are solved, and the system performance is improved.

The invention discloses string matching method and device based on a definite state automaton. The string matching method comprises the following steps: scheduling a program code of the definite stateautomaton DFA, which corresponds to a keyword block, when keywords input by a user are determined to be included in a determined keyword block, wherein the program code is pre-generated by adopting an Aho-Corasick algorithm according to a corresponding relationship of a current state, input characters and an output state, which is determined by the keyword block; executing the program code, sequentially inputting characters included in a database to be searched, and determining the output state according to the current state and the input characters, wherein the output state is a current state of the character input next time; and outputting a character matching result according to the output state. The method adopts the mode of the program code to store the DFA, reduces the time delay for system processing and improves the speed and the efficiency of character matching.

The invention discloses a signal crest trimming method, which comprises the following steps of: computing the amplitude and phase of an input signal x(t), and if the amplitude, which is represented as the absolute value of x(t), of the input signal x(t) exceeds a threshold, subtracting the threshold from the signal to obtain a noise signal; performing molding filtration on the noise signal to obtain a same-frequency spectrum noise signal; and subtracting the same-frequency spectrum noise signal from the input signal x(t) of which the amplitude exceeds the threshold, and outputting the crest-trimmed signal. The technical scheme of the invention has the advantages of simplicity, high efficiency, relatively lower hardware equipment resource consumption in particular realization, short processing time delay, and the capacity of effectively performing crest trimming on randomly appearing signal peaks exceeding the threshold so as to reduce the peak-to-average power ratio of the signal.

The embodiment of the invention relates to the signal processing field, in particular to a method for removing narrow-band interference and a self-adapting filter, aiming to solve the problems of processing time delay and poor real-time for removal of interference by a fixity coefficient filter in the prior art. The method provided by the embodiment of the invention comprises the steps that: the self-adapting filter can determine a weight corresponding to the current sampling time, a cancellation signal corresponding to the current sampling time according to the determined weight and a reference signal sampled at the current sampling time, wherein the reference signal is generated based on a centre frequency of the narrow-band interference; then the self-adapting filter filters a band signal sampled at the current sampling time according to the determined cancellation signal corresponding to the current sampling time, and finally the band signal with narrow-band interference being removed is obtained. The embodiment of the invention can reduce the processing time delay, improve the real time, and perfect an interference cancellation effect.

The invention relates to a method and a system for managing log information. The system comprises a log information management unit, a log information extraction and formatting unit, and a data unification and centralization unit, wherein the log information management unit is used for configuring log format at the same server terminal, and intercepting and saving the log information, and a log recycle server is set up in a server data center; the log information extraction and formatting unit extracts, converts and loads various logs collected by the log recycle server; and the data unification and centralization unit is used for centralizing log information after extraction and conversion and establishing a data mart. By unifying the log formats on the same server, the extraction and conversion proportion during the log information extraction and formatting is reduced to the greatest extent; and through saving the processed data in a centralized and united manner, the analysis efficiency of the server to the log is improved.

The invention provides a data sending method. The method comprises the steps that a medium access control (MAC) entity of a first network node allocates data packets to at least one hybrid automatic repeat request (HARQ) unit of at least two cells, wherein different radio access technologies (RATs) are employed by the at least two cells, the at least two cells share the same HARQ unit, or each of the at least two cells corresponds to one HARQ unit, and the HARQ unit is an HARQ entity and / or an HARQ process; and the first network node sends the data packets to a second network node through the at least two cells. Through application of the scheme, the data packets are allocated to at least one HARQ unit of the at least two cells by a shared MAC layer, so the end-to-end time delay is effectively reduced.

The embodiment of the invention discloses a frame synchronization method and device, and relates to the field of communication, wherein the method and device are used for improving the processing efficiency of frame synchronization. In the embodiment of the invention, the method comprises the steps: converting a received serial code stream and obtaining a parallel cod stream; employing a preset key field of a frame head corresponding to a data frame contained in the parallel code stream to match with each sub parallel code stream in the parallel code stream in a parallel manner; determining the offset of the frame head in a parallel code stream according to the position of the sub parallel code stream, which is successfully matched with the preset key field, in the parallel code stream; carrying out the pre-aligning processing of the parallel code stream according to the frame length corresponding to the data frame contained in the parallel code stream and the determined offset of the frame head; judging whether the pre-aligned frame head is a pseudo frame head or not, enabling the parallel code stream after pre-aligning to serve as a synchronized parallel code stream if the pre-aligned frame head is not the pseudo frame head, and outputting the parallel code stream, thereby solving the above problems.

This invention discloses an MAC layer sending processing method, including: process the sending data with QoS-based multiplexing, cascading segmentation, ARQ, generating transmission block, HARQ, and other processes. The invention also discloses an MAC layer receiving processing method, including: process the receiving data with HARQ, transmission block queue distribution, decomposition, retransmission, demultiplexing, and other processes. The invention also discloses the base station and UE using the above MAC layer processing method. According to the invention, through the transmission channel types, it can use less MAC layer entities to handle transmission channel, thereby reducing the complexity of MAC layer processing, and improving the MAC layer efficiency on the business processes, thereby enhancing the system efficiency. In addition, since the MAC layer processing entities of the invention are few, making data processing steps reduced through the MAC layer, thereby reducing the data processing delay.

The invention discloses a business processing method. A working node acquires operators in a stream-oriented computation application model dispatched by a master node, the operators in the stream-oriented computation application model and data stream directions among the operators form at least one iteration loop, iteration times corresponding to each iteration loop is configured on an outlet operator of each iteration loop, the outlet operator is the last operator in the data stream direction of each iteration loop and receives business data, and the business data are processed according to a partial processing logic carried by each operator and are outputted from the outlet operator when the fact that the iteration times of the business data reaches that of the iteration loop with each outlet operator is determined according to the partial processing logic carried of each outlet operator. By the business processing method, data processing delay can be reduced, and data processing instantaneity is improved.

The invention discloses an encoding / decoding method and device for orthogonal repeated accumulate codes. In encoding, a repeatedly encoding submodule conducts code block segmentation, CRC (cyclic redundancy check), Turbo encoding and code block cascade to input TB bit information so as to obtain a repeated encoding bit sequence; the repeated encoding bit sequence is multiplexed with control information and then interleaved by a channel and processed by a modulation submodule for orthogonal accumulate encoding; further, the information is subjected to transmission precoding / RE mapping, and CP adding on IFFT, and then is transmitted; in decoding, the accumulative relationship of all codes in a receiving estimating sequence is relieved; then a modulation code estimating sequence is subjected to flexible modulation and channel de-interleaving in sequence, the processed information is sent to a repeated decoding submodule; and code block segmentation, dissociation rate matching, Turbo decoding, CRC decoding and code block cascade are conducted in sequence to complete decoding. The encoding / decoding method and device can effectively improve the system decoding performance in a serious multipath fading condition, and reduce the processing cost of the system and the processing time delay.

The present invention relates to the field of cloud computing, and provides a video frame dispatching method based on edge computing. The method comprises the following steps of: generating a video task by a user terminal, performing compression of the video frame number, and sending a resource condition consulting request to a controller; receiving the request of the user terminal by the controller, and obtaining edge server resource information to each edge servers capable of being connected; updating an edge server list by the control terminal; calculating resource values c* and m* of the video task when the load is lowest in the range of the remaining resource of the edge servers by the controller; confirming a serial number e* of the edge server with the shortest total delay of the current task processing by the controller, and sending the edge server information to the user terminal; and sending the video task to the edge server with the serial number of e* for processing by theuser terminal, and uploading the processing data to a cloud server for storage, statistics and analysis after the edge server completes processing. The video frame dispatching method based on edge computing can effectively reduce the transmission and processing delay of the video task and can improve the resource utilization rate of the edge servers.

The present invention relates to a processing method of the IMS conversation, which comprises that step 11, whether the registered information of a called party exists is estimated by a calling side S-CSCF, if the registered information of a called party exists, step 12 is executed, otherwise, the S-CSCF analyzes the destination address according to the called party PUI, to retransmit the Invite request to the relevant I-CSCF, and the I-CSCF processes the Invite request according to the 3GPP standard conversation flow; step 12, the S-CSCF checks the state of the called party PUI and the signed contract information, and processes the called party PUI and the signed contract information. The present invention expands the S-CSCF function in a certain grade on the basis of the 3GPP IMS conversation flow, optimizes the IMS conversation processing flow, to reduce the unnecessary signaling interaction during the IMS intraoffice conversation, effectively decreases the signaling flow and the processing load of the equipment, and advances the service quality.

The invention discloses a data processing method, a device and a system of a JAVA intelligent card so as to solve the problems of the prior art that a JAVA intelligent card takes long time and has quite low operation efficiency in processing CAP files. The method comprises the following steps that: a method in a program conversion package CAP file which needs to realize corresponding functions by transferring an NATIVE function is determined, and the method body of the method is set to be empty; the corresponding relationship between the NATIVE function and the method is configured; a method header is modified according to the corresponding relationship; and according to each determined method, the sign of the method header of the method is designed as the label information which expresses that the method transfers the characteristic calve of the NATIVE function and the corresponding NATIVE function that the method corresponds to is recorded in the method header of the method. The technical scheme of the invention reduces the time delay of the intelligent card in processing data, and improves the operation efficiency.

A method for removing serial interference of a multi-antenna system and a device for realizing the method are disclosed, the system comprises N sending antennas, the method comprises the following steps of: (a) judging quality of signals of each path of data stream in receiving signals; (b) performing minimum mean square error MMSE detection with a path of data flow having the optimal quality of signals in order to detect a path of data stream; (C) soft-demodulating the detection result to acquire soft-bit information, judging whether the N paths of data streams are detected, if so, ending; if not, performing the next step; (d) according to the soft-bit information acquired in the step (c), obtaining possibility of the detection result mapping on each constellation point of modulation constellation map, and multiplying the possibility by the sum of values of the corresponding constellation points to attain the soft-symbol information, making use of the soft-symbol information to intervene for rebirth, canceling, judging the quality of signals of each path of data stream in the cancelled signals, and entering into the step (B).

The invention relates to a mobile communication technique, which discloses a method for paging users in the mobile communication system to simplify the communication instruction system and reduce the paging time and processing time delay. In said invention, the invention combines the two paging modes as core network and the access network into one mode as access network, to simplify the direct control and management of core network on the user state, to complete relative user mobile state management all in the access network. The paging message can be transmitted via descending shared channel or special paging channel. And when starting the paging, the paging message only contains the user mark.