51results about How to "Excellent throughput" patented technology

The invention discloses a routing method for data transmission in a space delay/disruption tolerant network. The routing method comprises the following steps: (1) searching for a static route: if no static route exists, executing dynamic route calculation; and (2) calculating a dynamic route: calculating the dynamic route according to a source node for transmitting data and a destination node by the following substeps: (2.1) calculating the minimum delay route; (2.2) testing the capacity of the route; and (2.3) selecting a next-hop node: comparing delays of all the selected routes, and selecting the minimum delay route. According to the invention, the routing method is based on space delay/disruption tolerant network capacity constraints of a node contact relational graph in the network, and the minimum delay route from the source node to the destination node can be calculated by precognizing a contact relation graph among nodes in the running process of the whole network and data streams among node pairs, so that the throughput of the whole network can be increased, the space node resources can be saved, and higher network performance can be obtained.

In cognitive radio, frequency spectrum sensing is an important premise and a core link for realizing the frequency spectrum dynamic access. The invention aims to provide a method for selecting a multi-user sensing channel in a cognitive sensor network, which comprises the following steps of: on an energy detection method, sensing normalized throughput acquired by a primary user channel from a maximized secondary user; using a detection time optimal scheme to budget the maximum throughput of all the secondary users and the selected channels of the secondary users; constructing a maximum throughput matrix; using a bidiagraph to express the channel selection problem under a multi-user multi-channel environment; converting a maximization and minimization problem into a unified minimization solution problem; and under the limit of target detection probability, adopting an improved Hungarian algorithm for the optimal selection of the sensing channel. By the method disclosed by the invention, the minimized throughput of the whole secondary user network can be greatly improved.

The invention provides a data space multi-dimension indexing method based on a load balance and a query log, and relates to the technical field of data space indexing. The purposes that inverted indexes are distributed in different index nodes to enable the index nodes to keep load balance, communication consumption related in query processing is minimized, and the searching space is reduced are achieved. In vertical partitioning, token words for indexing are gathered through the query log and words frequently occurring in an entity, and an access mode between user query and an inverted list is represented by a hypergraph; in horizontal partitioning, access mode information between the user query and the entity is depicted by a hypergraph, horizontal partitioning problems are reduced into hypergraph partitioning problems, therefore, loads of the different index nodes keep balanced, and communication consumption related in querying is reduced. By combining the vertical partitioning and horizontal partitioning strategy, two-dimensional mixed indexing is constructed and expanded to be three-dimensional indexing. An experiment on a public data set DBLP shows that the handling capacity, the query response time and the expansibility of the method are superior to those of an existing method.

The present invention relates to a method and a device for the controlling of the overload. The present invention is characterized in that the method comprises the following steps: 1. when the customer terminal wants to switch into the base station, the base station judges whether the present switch in number of the customer terminal surpasses the prior set limiting value; if the result is yes, the step two is enforced, otherwise the base station switches in the customer terminal to the base station; 2. the base station classifies the present switch in customer terminals into a plurality of groups according to the influence of the customer terminal to the thruput of the system and releases the customer terminal which has a small influence to the thruput of the system in the plurality of groups and has the prior set property; and the customer terminal needs to be switched into the base station is switched after the releasing. The device of the present invention comprises a base station which comprises an overload judge mould and an overload controlling mould. The method or device of the present invention realizes that the system thruput reaches the best when releasing the old connection through considering the wireless environment of the present customer terminal when controlling the overload.

The invention provides a quantum chemistry reaction optimization multi-relay selection method of a cognitive relay network. The method comprises steps of: 1, establishing a cognitive system relay selection model; 2, initializing a quantum molecule set and a system parameter; 3, evaluating the potential energy of all quantum molecules in the set and selecting the measurement state of the quantum molecule with the lowest potential energy as a global optimal solution; 4, arranging the kinetic energy of quantum molecules in a descending order, and performing decomposition reaction, invalid collision, and synthetic reaction; 5, evaluating the potential energy of newly generated quantum molecules, and if the minimum potential energy of the newly generated quantum molecules is less than the minimum potential energy of the previous generation, marking the newly generated quantum molecules as a new global optimal solution; and 6, if the number of iteration times is less than a preset maximum number of iteration times, returning to step 4, otherwise, outputting the global optimal solution. The method balances the primary user constraint condition and non-primary user constraint condition of the cognitive relay network, and chooses a relay selection scheme that maximizes the system throughput based on a quantum chemistry reaction mechanism.

The present invention discloses a bandwidth and power multi-target cross-layer optimization method facing a QOS in an AOS (Advanced Orbiting System). The original dispersive protocol layers are connected through cross-layer optimization to establish a cross-layer optimization model to allow each protocol layer to be regulated according to business demands and channel states, the bandwidth and theemission power are reasonably distributed through a cross-layer utility function and multi-target optimization so as to ensure the business QoS demands and improve the bandwidth utilization and systemthroughput.

The invention discloses an adaptive coding modulation scheme and resource scheduling method based on a sparse code multiple access (SCMA) system, and relates to an adaptive coding modulation scheme and resource scheduling method. The adaptive coding modulation scheme and resource scheduling method based on the SCMA system is brought forward for solving the problem of incapability of realizing optimal distribution of system resources in case of multiple users due to difficult balance between system throughput and transmission link quality, caused by incapability of dynamically selecting a proper coding modulation scheme according to change of a channel condition by use of an SCMA system with a fixed modulation coding mode. The method is realized by the following steps: 1, establishing a system model; 2, constructing a pair of 4-point SCMA codebooks, a pair of 8-point SCMA codebooks and a pair of 16-point SCMA codebooks; 3, performing optimal distribution of system resources in case of multiple users; 4, performing resource scheduling on users after adaptive modulation and coding, and the like. The method provided by the invention is applied to the field of adaptive coding modulation scheme and resource scheduling.

The invention discloses an SCMA uplink frequency spectrum resource allocation method based on minimum interference, which allocates a frequency spectrum bandwidth to a subcarrier of an SCMA uplink system at a base station end according to a derived frequency spectrum bandwidth formula on the basis of user codebook resource allocation so as to meet the transmission rate requirement of each user service. According to the SCMA uplink frequency spectrum resource allocation method based on minimum interference, the user transmission rate Qos requirement of the SCMA uplink is satisfied; and the spectrum resource allocation method for minimizing the interference signal of the user on the subcarrier K is designed, and by applying the unique user codebook allocation method and the Shannon limit, not only is the user service ensured to reach the maximum transmission rate, but also the throughput of the system can be optimal.

The invention discloses a signal transmitting and receiving method for a code division multiple access multiple-input-multiple-output (CDMA-MIMO) system by employing generalized three-dimensional complementary codes, which belongs to the field of communication and aims to solve the problems that the signal transmitting and receiving method for the existing CDMA-MIMO system is low in adaptive capacity relative to different communication environments and the resource utilization rate requirement of the system is high. The method comprises the following steps: respectively performing space-time coding and spectrum spreading based on the generalized three-dimensional complementary codes on initial data transmitted by K users; superposing and merging a data flow which corresponds to the same antenna and the same carrier, modulating the data which corresponds to the same antenna and the same carrier to the same carrier for merging and transmitting; then simultaneously receiving the signal by employing P receiving antennas, respectively performing carrier demodulation by employing M carriers after each path of signal is synthesized, and despreading and decoding based on the generalized three-dimensional complementary codes, wherein each user acquires P groups of data corresponding to the P receiving antennas; merging and judging by employing the maximum ratio merger criterion, and outputting the data. The method is used for transmitting and receiving signals.

The invention relates to a relay selection method for a quantum teaching and learning search mechanism, the method is realized through using the mechanism for a combination target selected by relay, and maximum average network benefit and compromised fairness are evenly considered. The method comprises the steps: (1) establishing a multi-user relay system model, (2) initializing class, (3) performing teaching stage, (4) performing learning stage, (5) mapping a new quantum student as an integer solution through an above mapping rule, (6) selecting a quantum student with the best grade from the updated quantum student as a new quantum teacher, and (7) obtaining a relay selection scheme. According to the invention, a relay selection problem in integer programming can be solved, a novel relay selection method based on a quantum teaching and learning algorithm is designed as an evolution strategy, and the designed method has advantages of fast convergence rate and high convergence precision.

The invention relates to a link scheduling method and system suitable for a long-delay SIC network. The method comprises the following steps: generating a minimum power value of transmission signals of each sending node that can be decoded by an SIC algorithm according to the number of the sending nodes, ambient noise power and a signal-to-interference ratio threshold of the SIC algorithm, and collecting the minimum power values as a K-SIC power threshold vector to divide sending power levels for each sending node; determining a load state of a long-delay network according to the amount of data sent by each sending node, executing a minimum frame length scheduling algorithm according to the load state and the sending power levels, and generating a minimum scheduling frame length of the long-delay network; and executing a minimum power scheduling algorithm according to the number of the sending nodes, the minimum scheduling frame length and a reception mechanism of receiving nodes to obtain a link scheduling strategy that minimizes the power consumption of the whole network. Thereby, the transmission efficiency between the nodes in the long-delay SIC network can be improved, and theoverall energy consumption of the long-delay SIC network can be reduced.

The invention discloses a distributed storage system service equalization processing method, which comprises the following steps: receiving a plurality of service requests sent by a client after executing a service operation, and analyzing the service type of the service operation; determining an adjustment strategy corresponding to the service type according to a preset adjustment rule; if the service type corresponds to the delay improvement type strategy, controlling the service request to read and write data in a service cache layer arranged in front of an underlying system; wherein the service cache layer stores service processing data in a preset time period before the current moment; and if the service type corresponds to the throughput improvement type strategy, controlling the service request to read and write the data of the underlying system. According to the invention, the performance requirement can be analyzed according to the type of the service operation, so that an appropriate processing mode is selected for processing, and the overall performance of the distributed storage system is improved. The invention further discloses a device and equipment based on the method and a computer readable storage medium.

The invention discloses an adaptive scheduling method and device, and a computer readable storage medium, and the method comprises the steps of initializing the calculation resources of each algorithmnode, and setting an adaptive adjustment time interval; counting the task load of each algorithm node in a time interval; and allocating new computing resources to each algorithm node according to the task load, the computing resources of each piece of programmable hardware and the computing load required for executing the algorithm program, and controlling each piece of programmable hardware toexecute the algorithm program corresponding to each algorithm node according to the new computing resources. By means of the mode, allocation of computing resources can be adjusted in an adaptive mode, and the processing speed of an algorithm program is increased.

The invention discloses a nonlinear waveform synchronous and asynchronous NOMA system design method, which comprises the following steps: step 1, establishing a synchronous and asynchronous NOMA system model of a nonlinear waveform MSK-type signal to obtain a received signal, the received signal comprising normalized time delay, transmitting power and response length; step 2, sampling the received signal by adopting an oversampling technology to obtain a received signal sampling value and a matrix form thereof; step 3, according to the Shannon theorem, obtaining the index throughput for measuring the performance of the synchronous and asynchronous systems; step 4, establishing an optimal system design problem taking the maximum throughput as a target according to the throughput expression; and step 5, analyzing the normalized time delay, the transmitting power and the relationship between the response length and the throughput. According to the nonlinear waveform synchronous and asynchronous NOMA system design method provided by the invention, the system can reach the maximum throughput by setting the normalized time delay and the transmitting power of the two users, and the optimal design of the system is completed.

The invention discloses a resource writing method and system, a resource reading method and system and a time sequence storage system. The time sequence storage system comprises a resource writing system and a resource reading system. The resource writing method comprises the following steps: receiving a request resource label of a to-be-written resource, wherein the to-be-written resource is stored at a corresponding position in a write request resource collection device according to the request resource label; acquiring a to-be-written resource from a write request resource collection deviceaccording to the received request resource label; and writing the to-be-written resource into the at least one data block according to a predetermined mode. The invention further discloses a calculation device for executing the method.

The invention relates to a multi-fault tolerant large-scale three-dimensional network-on-chip deterministic path routing method, which comprises the following steps of: maintaining a routing table oneach node of a three-dimensional network-on-chip, performing line routing on each node based on the routing table, and dynamically updating the routing table when a fault is detected, wherein the updating comprises the following steps: calculating the maximum strongly connected component of the three-dimensional on-chip network by adopting a Tarjan algorithm so as to abandon nodes which cannot work normally; processing a fault link located at the boundary based on a constructed three-dimensional steering model, so that each link cluster has and only has one steering forbidding pair, and updating a routing table; and processing the internal fault link according to a preset routing rule, and updating the routing table. Compared with the prior art, the method has the advantages that a network-on-chip can bear the influence of various faults, available nodes in the reconstructed network-on-chip can be utilized to the maximum extent, and the performance of the method is superior to that ofan existing solution in the aspects of average delay, throughput and energy consumption.

The invention is applicable to the technical field of wireless communication, and provides a multi-relay wireless data transmission control method, a communication system and a terminal equipment. Themulti-relay wireless data transmission control method comprises the following steps of constructing a two-hop multi-relay energy-carrying cooperative communication system containing a direct connection link; constructing a data transmission mathematical model of the two-hop multi-relay energy-carrying cooperative communication system by using a power distribution protocol or a time switching protocol; calculating to obtain the optimal throughput of the two-hop multi-relay energy-carrying cooperative communication system by using a convex optimization algorithm according to a data transmissionmathematical model constructed by a power distribution protocol; calculating to obtain the optimal throughput of the two-hop multi-relay energy-carrying cooperative communication system by using a polygon approximation method according to a data transmission mathematical model constructed by a time switching protocol. According to the invention, the existence of direct connection links and multiple relays in a communication system is considered, the method better conforms to a real scene, meanwhile, corresponding solving modes are adopted according to different mathematic models to solve theoptimization problem, and the optimal strategy of the optimization quantity is obtained.