44results about How to "Reduce communication consumption" patented technology

The invention discloses a power grid sub-graph construction method based on region division, a topology analysis method, a power grid sub-graph construction device based on region division, and a topology analysis device. The power grid sub-graph construction method comprises the following steps: acquiring equipment components and attribute information thereof in a power grid system for establishment as vertex data; dividing the vertex data into a plurality of region vertex sets according to a geographic region attribute of the equipment; acquiring a binary relationship between each two vertices in each region vertex set, and constructing a binary relationship set of each region vertex set according to the binary relationship; constructing a first edge set according to the connection relationship of the equipment components in the power grid system; constructing a second edge set corresponding to the region vertex sets according to the correspondence between the binary relationship setand the first edge set; and constructing a region sub-graph of the power grid system according to the region vertex sets and the second edge set. By implementing the invention to effectively divide the power grid data, the divided sub-graphs are relatively balanced in scale, thereby realizing distributed storage and parallel processing of the power grid data, and improving the efficiency of topology analysis.

The invention provides an intelligent electronic label information system, which comprises an electronic label and a reader-writer, wherein the electronic label stores an instruction which can be read by the reader-writer; and the reader-writer stores a procedure code corresponding to the instruction and is used for reading the instruction stored by the electronic label and executing the corresponding procedure code. By the intelligent electronic label information system, the equipment manufacturing cost of the electronic label system can be greatly reduced, and the management and running efficiency can be improved; and the implementation range of the electronic label system can be deeply expanded. Furthermore, the storage space of the electronic label is effectively saved, and the transmission consumption and the communication consumption during partial interaction can be reduced. Moreover, a phenomenon that all types of data information are concentratively transmitted to a uniform background server is avoided, the bandwidth consumption and the communication cost of large-scale data transmission in multiple types of application are reduced, the probability that important data information leaks is reduced, and data privacy protection is facilitated.

The invention provides a cross-cluster asymmetric group key negotiation method in a wireless sensor network. The method comprises steps as follows: an allied and shared key between clusters is established, cluster heads are taken as bridging nodes, and sensor nodes of different nodes have the same group key factor information; an asymmetric computation algorithm is designed in the group key negotiation process, more computation and communication traffic of the sensor nodes are migrated to the cluster head nodes with larger energy, and the lightweight property of computation and communication overhead of the sensor nodes is ensured; self-certification property of keys is realized, additional communication rounds are not required, the sensor nodes can self-certify the correctness in computing the group keys, and the correctness and the safety of the group key negotiation are guaranteed. Group key negotiation of the sensor nodes distributed in different clusters in the wireless sensor network is realized, a safe communication channel is established, the scale of cooperative computation and information sharing of sensor node groups is further expanded, energy consumption of the sensor nodes is reduced, and the service life of the sensor nodes is prolonged.

The invention discloses a method for managing and allocating frequency spectrum resources based on federated learning. The method includes that the terminal device collects state information from the environment; if the information change exceeds a threshold value, making a decision on the frequency spectrum, sub-channel and transmission power of the channel transmission; the terminal device collects the state information and reward information at the next moment after the decision, And use the gradient descent method to train the actor network and critic network in the main network; when the cumulative gradient of the terminal device reaches the preset gradient threshold, the main network parameters are uploaded to the base station; the main network parameters collected by the base station reach the threshold After the value is set, the main network parameters are aggregated and broadcast to all terminal devices according to the preset weight; the terminal devices update the parameters of their main network and target network after receiving the aggregated parameters. In order to solve the problems of low spectrum utilization rate and easy disclosure of user privacy in the prior art, the present invention adopts an asynchronous federated learning method, and has the advantage of low communication consumption while solving the above problems.

The invention provides a method for identifying boundary nodes in a distributed wireless sensor network. The method is used for identifying the boundary nodes in the sensor network by utilising a DSCS (Distributed Sector Cover Scanning) technology and is applicable to homogeneous or different non-uniform wireless sensor networks same in function, sensing and communication ranges. The method comprises the following steps that: (1), the nodes independently collect neighbour information in the network; (2), each node establishes a cartesian coordinate system by taking self as the circle centre and calculates an absolute angle of a neighbour node thereof; (3), the neighbour nodes are sorted in an ascending manner according to the absolute angles; and (4), the boundary nodes are identified by utilizing DSCS. According to the invention, the technological problem that the identification precision of the boundary nodes in the traditional wireless sensor network is low can be solved; the identification problem of the boundary nodes in the wireless sensor network is decomposed into the sensing sector edge coverage problem of one node; therefore, the algorithm complexity is effectively reduced; the operation time and the inter-node communication and energy consumption in the boundary node identification process are reduced; and the identification precision is improved.

The invention discloses a resource monitoring method. The resource monitoring method includes: a cloud node determines whether a server has pulled the resource status value of the cloud node in the current push cycle; When the resource state value of the cloud node is obtained, the cloud node obtains the current resource state value, and pushes the obtained resource state value to the server. The invention also discloses a resource monitoring device. The invention also discloses a resource monitoring system. The invention can reduce the communication consumption of cloud computing data center resource monitoring.

An Access Point (AP) connection device establishes a virtual Inter-Process Communication (IPC) connection with each of a plurality of APs. The AP connection device establishes a Controlling and Provisioning of Wireless Access Points (CAPWAP) tunnel connection with a wireless Access Controller (AC).

The invention provides a multi-AGV fixed-distance cruise system fault detection method with low communication and calculation consumption, and belongs to the technical field of fault detection. The technical solution is: firstly construct a discrete time invariant state space model of multi-AGV fixed-range cruise system including AGV actuator failure; secondly, set up an event trigger mechanism for information communication; then construct an error system including event-triggered transmission error influence and H ∞ / H ∞ type of performance indicators. The beneficial effects of the present invention are: the present invention can reduce the communication consumption of the multi-AGV fixed-range cruise system under the framework of the event trigger mechanism, reduce the calculation consumption of the online fault diagnosis process, and realize the optimal fault of the multi-AGV fixed-range cruise system detection.