17results about How to "Reduce blocking rate" patented technology

The invention relates to the technical field of computing power optical access networks, in particular to a cloud-side elastic PON resource management method, system and device based on an SDN (Software Defined Network). A flexible optical distribution network ODN of the network is formed by using an array waveguide grating, partition management and global control are performed on a cloud-edge elastic PON based on an SDN technology, partition fixed-point unloading is performed on user tasks by using a time delay-load cooperative unloading method and a routing strategy, and server computing resources and link spectrum resources are allocated. The problems that distributed computing nodes in an optical access network cannot sense each other, cooperative work cannot be achieved, computing resources are wasted due to the fact that computing tasks cannot be scheduled to an optimal node for computing, and the service quality cannot be guaranteed are solved. Under the computing power optical access network architecture, the end-to-end time delay demand of task unloading and the optimal network resource allocation are considered at the same time, the overall resource utilization rate of the network is further improved, and the average end-to-end time delay and the blocking rate are reduced.

The invention provides a communication path distribution method for a time-varying service in an optical network and related equipment. The method comprises the following steps: responding to a received time-varying service; determining a target working path of the time-varying service based on the initial bandwidth and the maximum bandwidth required by the time-varying service; the reserved bandwidth is determined based on the bandwidth average value of the time-varying service on the target working path and the time width efficiency value of the time-varying service, and the time width efficiency value is associated with the bandwidth contained in the time-varying service and the corresponding duration; and determining a protection path of the time-varying service based on the reserved bandwidth.

The invention particularly relates to an unmanned aerial vehicle cluster downloading data load balancing algorithm based on micro-service, which comprises the following steps of: replacing periodic synchronization by combining multi-round sampling and instant calculation, and ensuring that average response time can reflect the real-time state of the micro-service; and the optimal micro-service node is dynamically screened by monitoring the micro-service response state in real time, so that the efficient distribution of the data downloaded by the unmanned aerial vehicle in the micro-service cluster is realized. On the basis, a real-time response time decision and hot registration dynamic management are deeply combined, so that not only is the optimality of data distribution ensured through response time, but also the capacity expansion cost is reduced through hot registration. According to the invention, the technical problems of inaccurate response time perception, dependence on manual intervention on capacity expansion and shrinkage, long-term resource occupation of fault nodes and encumberment of overall data flow in a mass unmanned aerial vehicle data downloading scene in the existing load balancing scheme are solved; the method is suitable for scenes requiring massive unmanned aerial vehicle collaborative operation, such as regional emergency monitoring, large-scale training and urban air traffic management.

The invention relates to the field of multi-robot cooperative scheduling, and discloses a multi-robot cooperative scheduling unmanned underground mechanical garage system and method, and the system comprises a hardware subsystem which comprises a transfer robot, a parking space frame, a vertical elevator, and an entrance and exit junction area; the control system is deployed in the central control server, and the control system comprises a multi-layer dynamic data grid generation module which is used for constructing a discretized data grid corresponding to a garage physical space; and the central data calculation module is used for continuously updating the data of each data layer in the multi-layer dynamic data grid according to the real-time state of the garage. In the regional congestion degree and traffic control layer, the congestion index is calculated according to the density, the speed variance and the dispersion in the movement direction of the transfer robot, and the task gravitation modulation coefficient is generated, so that the tendency of the robot to enter the crowded region is reduced, the adaptive dispersion of the traffic flow is promoted, and the continuity of garage operation is maintained.

The invention relates to the technical field of elastic optical network resource allocation, and discloses a service request spectrum resource allocation method in an elastic optical network, which comprises the following steps of: initializing the elastic optical network and a group of request services to be allocated; dividing the current to-be-allocated request service reaching the elastic optical network into an instant reservation request and an advanced reservation request; for the instant reservation request, performing service construction according to the arrival time of the instant reservation request and the computing resource of the corresponding destination node; for the advance reservation request, constructing a priority evaluation function based on the number of spectrum slots required by the task, the duration time and the maximum tolerable delay time, and performing service construction based on the priority; and a special protection path which is not intersected with the target working path is established for the target working path of each service request, so that a double-path protection mechanism is realized. According to the method and the system, resources are reasonably allocated through distinguishing the service request types, constructing the priority function and setting a dual-path protection mechanism, so that the network transmission reliability and survivability are improved, and the user experience is improved.

The invention belongs to the related technical field of wind tunnel tests, and discloses a wind tunnel test wind turbine tail flow measuring device and system based on a pitot tube array. The wind measurement module comprises wind measurement units which are connected in series in the horizontal direction, each wind measurement unit comprises two scissor arms and a pitot tube, the centers of the two scissor arms are fixedly connected, and the two scissor arms can rotate around the centers to adjust the included angle between the two scissor arms; the pitot tube is fixedly connected to the center of the scissor arm, the mounting direction of the pitot tube is the same as the direction of to-be-measured airflow, and the pitot tube is used for measuring the airflow velocity of wake flow in real time; the wind measurement module is connected to the adjustable mounting support module, the height and width of the wind measurement module are adjusted by adjusting the height and width of the adjustable mounting support module, and then the height of wind measurement units in the wind measurement module and the distance between the wind measurement units are adjusted. According to the invention, the problem that wake flow measurement is difficult to be suitable for fan models with different scale ratios at the same time is solved.

The utility model belongs to the technical field of winding equipment, and particularly relates to winding equipment for sunshade net processing, which comprises a first support plate, and the top of the outer side wall of the first support plate is fixedly connected with a winding component; the top of the outer side wall of the first supporting plate is fixedly connected with a supporting frame. A pair of spring columns is fixedly connected to the inner side wall of the supporting frame. The bottom of the outer side wall of the spring column is fixedly connected with a second supporting plate. The inner side wall of the second supporting plate is rotationally connected with an extrusion roller. The top of the outer side wall of the second supporting plate is rotationally connected with a threaded rod. The side wall of the threaded rod is in threaded connection with a supporting frame. The inner side wall of the supporting frame is fixedly connected with a pair of connecting columns. Through the arrangement of the threaded rod and the sliding block, a worker can control the pressure of the extrusion roller on the sunshade net, the tension on the surface of the sunshade net is increased, the situation that due to insufficient tension, the degree of tightness of a rolled product is not uniform is reduced, the situation that due to too large pressure, fibers in the sunshade net are broken is reduced, and protection of equipment on the sunshade net is improved.

The invention relates to a dynamic routing method based on storage and forwarding in a space division multiplexing elastic optical network, and belongs to the technical field of communication. The method comprises the following steps: firstly, acquiring the current state of a time-shifting multilayer graph, performing routing in the time-shifting multilayer graph, then determining the total occupied frequency slot number according to a path distance and a modulation format, and selecting a transmission path of a request in combination with the balance of multi-dimensional resources; then grouping and grading the fiber cores by using a graph dyeing method, and selecting the fiber cores for each link by considering crosstalk of the fiber cores and frequency slot use conditions according to a fiber core selection method designed in the invention; secondly, designing a frequency spectrum selection method, and selecting a proper frequency spectrum block for the request by comprehensively considering fragments of time domain and frequency domain dimensions; and finally, carrying out allocation in the time-shifting multilayer graph, and updating topology and resource use states until all requests are allocated. The storage and forwarding process can be simplified while the network capacity is improved, and the blocking rate is improved.

This utility model relates to the field of glass production technology, and in particular to an anti-clogging device for a glass bottle production line. It includes a platform and rotating rollers, with multiple rotating rollers rotatably connected to the platform. An adjustment mechanism is provided inside the platform, comprising a reciprocating screw, a limiting rod, an elastic rod, and a connecting plate. The reciprocating screw is rotatably connected to the inner wall of the platform. This utility model, through the cooperation of a drive roller, a vibrating plate, and a semi-circular block, utilizes a low-friction drive roller instead of a traditional fixed guide rail at the point where the glass bottle narrows from wide to narrow. This provides a slight forward rotational force to the glass bottle, causing the contact point and force direction between adjacent bottles and the guide rail to continuously change, breaking the temporary self-locking phenomenon. It also drives the bottles to reciprocate and vibrate, transforming static friction between the glass bottles into dynamic friction, reducing the coefficient of friction between the bottles, significantly reducing frictional force, and lowering the probability of clogging.

The present application provides a data transmission method and communication system for a processing card based on the PCIe protocol, wherein the method includes: pre-virtualizing the transmission channel into 8 virtual data channels and 3 virtual signaling channels; establishing a mapping relationship between the storage space on the host and the address interval of the BAR space of the PCIe; PCIe receives the downlink data transmitted by the host to the target hardware device according to the mapping relationship; PCIe processes the downlink data, and outputs the protocol message and the flag signal for identifying the BAR space to which the message belongs to the target hardware device through the hardware high-speed communication interface; the target hardware device sends the downlink data carried by the message to the corresponding virtual channel. The above scheme achieves the technical effect of effectively reducing the waste of hardware resources, reducing the probability of busy and blocked communication networks, improving the throughput of data transmission, and improving the efficiency of data transmission of large and small traffic data.

The present application relates to a kind of survival multipath resource allocation methods based on fragment perception in multicore optical fiber, belong to optical fiber communication and optical transport network field.The present application transmits service by using survival multipath and the routing of spectrum fragmentation metric-based, core selection and spectrum allocation method, when service reaches space division multiplexing elastic optical network, select two transmission paths that can guarantee the survival of service, if two paths do not satisfy service transmission rate, sub-service is transmitted on three paths by dividing service into smaller sub-service;Design spectrum fragmentation sensitive path fragmentation rate formula, according to path fragmentation rate formula, select the core in each path of selected path combination maximum path fragmentation rate;Respectively in each path of selected path combination, select the spectral block in selected core with the minimum difference and less than inter-core crosstalk threshold of the spectral block required by service on the path. The method reduces the bandwidth blocking rate of service in space division multiplexing elastic optical network and improves spectrum utilization.

The application discloses a large file cross-unit transmission method based on a business cooperation scene, relates to the technical field of cross-organization data transmission and resource scheduling, and takes a business context as a core to map an event type, an emergency level and an SLA deadline time into a calculable priority, and is linked with real-time network measurement results, so that scheduling no longer stays in static file attributes, but can instantly improve the service share of a key request according to events such as out-of-stock early warning and promotion start, thereby reducing the probability that a high-emergency task is blocked by regular transmission. By introducing unit-level quotas, admission and interruptible preemption on the side of a bottleneck link, long-term occupation caused by first-come-first-served is avoided, basic fairness between different units is ensured, and bandwidth can be quickly transferred to more urgent flows at a business peak moment. Weighted round-robin weights are dynamically updated according to the emergency degree, the SLA urgency degree and the quota surplus degree, hysteresis and minimum interval control are superimposed, and the agility of scheduling is improved.

The present invention belongs to the technical field of full-switch matrix cascading methods, and specifically relates to a non-blocking full-switch matrix cascading method based on dual variable routing, which adopts M×M matrix units to cascade M*M / 2×M*M / 2 matrices, and connects three groups of matrix units according to a cascade relationship, including input switching SR, bridge switching QJ, and output switching SC; establishes a cross connection between two groups of matrix units, calculates the routing relationship cascade matrix from the input array IN to the output array OUT; plans the complete routing (SR‑ij, SC‑jk) of all channels, and selects a group of mutually non-conflicting routes; calculates the switching configuration array of the matrix units of the input switching SR, bridge switching QJ, and output switching SC, and performs synchronous switching control. The problem of the inconsistency between the number of ports of the upper-level matrix units and the number of the lower-level matrix units is solved, and a double multi-route cross connection is adopted to reduce the blocking probability during routing planning and shorten the routing search time.

This disclosure provides a method and electronic device for storing and rapidly retrieving massive amounts of data, relating to the field of data processing technology. The method involves writing multimodal data into a storage layer and constructing an index metadata model that includes text retrieval indexes, attribute retrieval indexes, and vector retrieval indexes. Based on access status information, a comprehensive popularity score for data objects is determined. When cold data migration conditions are met, the corresponding multimodal data is migrated to a cold data area. The vector retrieval index is compressed and encoded to generate a quantization encoding matrix, and the access route is updated. Multi-condition query instructions are received, and the access probability of cold data objects is determined. When prefetching conditions are met, the cold data objects and their quantization encoding matrices are loaded into an isolated circular prefetch buffer. Multi-condition query instructions are distributed to multiple index nodes. Distance calculation methods are selected according to the physical region where the data object is located. Local recall results are obtained and then globally merged, sorted, and re-scored before output.

The utility model discloses a coal impurity removing device which comprises a material placing mechanism, a material conveying mechanism, a material discharging mechanism and a material conveying mechanism, wherein the material placing mechanism comprises a material placing tank and a material outlet; the discharge hole is fixed at the lower end of the material placing tank; the discharging anti-blocking mechanism comprises a connecting ring, a connecting frame, a rotating motor, a connecting block, a hydraulic cylinder and a dredging block; the connecting ring is fixed to the lower portion of the outer surface of the discharging port, the connecting frame is fixed to one side of the outer surface of the connecting ring, the rotating motor penetrates through the lower portion of the front face of the connecting frame, the middle of the output end of the rotating motor is sleeved with the connecting block, the hydraulic cylinder penetrates through the middle of the connecting block, and the dredging block is arranged on the upper portion of the output end of the hydraulic cylinder in a threaded mode. The problems that in the existing coal impurity removal process, in order to avoid blocking, an anti-blocking structure is arranged, but the anti-blocking structure is arranged in a discharging port, although blocking can be relieved, the anti-blocking structure is located in the discharging port, the circulation space is occupied, and the blocking probability is increased are solved.

The utility model belongs to the technical field of feeding machines, and discloses a feeding machine capable of maintaining uniform feeding, which comprises a feeding box, a conveying component and a material control component are mounted in the feeding box and are both obliquely arranged, a feeding hole is formed in the top of the feeding box, and a feeding hole is formed in the top of the feeding box. A discharging opening is formed in the side face of the feeding box, a left limiting groove and a right limiting groove are formed in the feeding box, one limiting groove is matched with the upper end of the conveying assembly, and the front end and the rear end of the upper end of the conveying assembly penetrate through the limiting grooves, extend to the front side and the rear side of the feeding box correspondingly and are connected with buffering assemblies. Due to the arrangement of the adjusting assembly, the distance between the lower end of the material control belt and the lower end of the conveying belt can be adjusted under the cooperation of the second transmission roller and the limiting groove, namely, the discharging caliber between the material control belt and the conveying belt can be changed so as to adapt to different filling rates of materials at the feeding port, and therefore the uniform discharging effect at the discharging port is guaranteed.

The present application discloses a method and apparatus in a node for wireless communication. The node receives a first information block, sends a second information block and monitors M1 control channel candidates in a first time window; the first information block indicates a scheduled cell set; the M1 control channel candidates occupy M2 control channel elements; the second information block indicates the combination adopted by the service cells included in the first scheduled cell subset; the first subcarrier spacing is used to determine the time length of the multi-carrier symbol in the first time window, and the combination adopted by the first scheduled cell subset is used to determine the number of multi-carrier symbols in the first time window; M1 is not greater than a first threshold, and M2 is not greater than a second threshold; the number of service cells in the first scheduled cell subset and the number of service cells in the scheduled cell set are used to determine the first threshold and the second threshold. The present application improves scheduling performance.