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36results about How to "Avoid overspending" patented technology

Joint channel estimation and signal detection method and device based on OTFS modulation

The invention provides a joint channel estimation and signal detection method and device based on OTFS modulation, and the method comprises the steps: receiving an OTFS modulation signal, scanning a corresponding pilot frequency receiving position according to a preset pilot frequency structure, and obtaining a receiving pilot frequency signal; according to the received pilot signals, estimating the channel parameters of each path and performing reconstruction to obtain an initial estimation channel; determining a transmitting signal according to the received signal and the estimated channel of each group of antennas, and determining an optimized channel according to the detected transmitting signal and the received signal; wherein the pilot frequency intervals of different antennas in the preset pilot frequency structure are determined according to the maximum time delay, a protection interval is arranged between the pilot frequency and the transmission signal, and the protection interval is determined according to the maximum Doppler frequency shift. According to the method, the received pilot signal difference of different transmitting antennas on the same antenna can be clearly distinguished, and the estimation precision is improved. The pilot frequency structure only occupies a small amount of channel resources, the resource utilization rate can be improved, and the problem of overlarge pilot frequency overhead is avoided.
Owner:BEIJING UNIV OF POSTS & TELECOMM

System broadcast message transmission method and device

The present invention discloses a system broadcast message transmission method. The system broadcast message transmission method is applied to a first class site. The method comprises: determining whether the system broadcast message shunt transmission is performed or not between the first class site and a second class site; sending the first class system broadcast message to the second class site after determining the system broadcast message shunt transmission is performed between the first class site and the second class site, wherein the first class site employs an antenna emission wave beam with a wave beam feature; allowing the second class site to employ a wave beam having wider wave beam width than the first class site for emission, or employ a section mode for emission or employ a quasi omnidirectional or omnidirectional mode for emission; overlapping the coverage range of a subordinate cell of the second class site and the coverage range of a subordinate cell of the first class site; and allowing the first class system broadcast message to carry the cell-grade common system information of the subordinate cell of the first class site. The system broadcast message transmission method and device can reduce the expense of the system broadcast message of a high-frequency communication system and improve the coverage performance.
Owner:ZTE CORP

Q routing method based on arc tangent learning rate factor

The invention discloses a Q routing method based on an arc tangent learning rate factor, which solves the problem that the additional learning rate factor adjusting capability of the existing algorithm is limited, and comprises the following steps of: arranging network topology; establishing a network Q value table; enabling the network node to obtain an estimated value of the neighbor with the minimum time cost; routing and deciding a data package, transmitting the data package, performing updating according to the Q value of the neighbor node with the minimum time cost; enabling the currentnode to update Q values of other neighbor nodes; circulating the routing process, and achieving self-adaptive routing adjustment of the wireless ad hoc network. According to the method, the Q value ofthe neighbor node which does not receive the data packet in the network is updated by using the learning rate factor with a large adjustment range, and adaptive adjustment can be performed accordingto different conditions of the network. According to the invention, the average delivery time of data and the oscillation between routes under high and low loads are reduced; route selection can be achieved only through local node information, excessive network overhead is avoided, and the method is used for wireless ad hoc network communication.
Owner:XIAN UNIV OF POSTS & TELECOMM

Transparent event-driven symbiotic virtual machine dynamic discovery method

ActiveCN105704217ADoes not affect the online migration functionTimely responseTransmissionClient machineInter-domain
The invention discloses a transparent event-driven symbiotic virtual machine dynamic discovery method comprising steps of: initializing and establishing an event chain table and a symbiotic virtual machine list for recording the symbiotic virtual machine information of a physical machine node in a host machine and a guest machine; when the guest machine joins a symbiotic virtual machine set, registering in the client machine in order to monitor the registration operation of the guest machine, monitoring a control/shutdown node corresponding to the guest machine to monitor the migration operation of the guest machine, monitoring, in the host machine, a root directory node of an inter-domain sharing storage system corresponding to each guest machine in order to monitor the shutdown operation of the guest machine, writing corresponding events in the event chain table of the host machine and the guest machine, and enabling the host machine and the guest machine to process operation corresponding events in the local event chain table in order to update the symbiotic virtual machine list of the physical machine node. The transparent event-driven symbiotic virtual machine dynamic discovery method is transparent, low in cost, and high in efficiency for a virtual machine monitor and an operation system.
Owner:NAT UNIV OF DEFENSE TECH

Distributed storage system for common storage of metadata and data

The invention provides a distributed storage system for common storage of metadata and data, which adopts a four-layer hierarchical architecture and comprises a physical layer, an element block layer, a consensus layer and a micro-metadata layer, the micro-metadata layer stores micro-metadata, the consensus layer is used for providing a consensus mechanism and providing consensus service upwards for the micro-metadata layer to call, and the physical layer is used for storing the micro-metadata. The micro-metadata is subjected to data writing and modification operation after passing through a consensus layer consensus service, a parallel Byzantine fault-tolerant algorithm is adopted, a plurality of files can be modified at the same time, the consensus speed is high, a distributed storage system only has a plurality of data nodes, no metadata server exists, and the data storage efficiency is improved. All data of the infinitesimal data layer, the consensus layer and the element number block layer are stored in each data node by adopting a distributed storage method; the physical layer comprises all physical nodes, namely server nodes, of a distributed storage method implemented by the distributed storage system, and the data, the element block layer, the consensus layer and the micro-metadata layer are located above the physical layer and all run above the server nodes.
Owner:ZEU CRYPTO NETWORKS INC +1

Reliability enhancement structure for an SC PUF circuit and an enhancement method thereof

The invention relates to the field of circuit design and information security. The invention discloses a reliability enhancement structure for an SC PUF circuit. The structure comprises a switch capacitor PUF array, a reliability test circuit, a PUF output register, a reliability identification register and a control logic generation module, a PUF unit comprises two capacitor sampling chains; thecapacitor sampling chain is connected with a latch-type sense amplifier through a sampling point; the negative electrode of a test capacitor is connected with a sampling point of a second capacitor sampling chain in each PUF unit through a first multi-way switch, the positive electrode of the test capacitor is respectively connected with a first port and a second port through a second multi-way switch, the first port is connected with a ground wire or a power supply through selection signals, and the second port is connected with the ground wire. The invention also discloses an enhancement method for the reliability enhancement structure of the SC PUF circuit. According to the reliability enhancement structure and method for the SC PUF circuit, the reliability of the output of the switchedcapacitor PUF is improved, so that the switched capacitor PUF can be directly applied to key generation without adopting any error correction mechanism.
Owner:HUBEI UNIV OF TECH

A pipeline-based distributed multi-table connection method and system

The invention relates to a distributed multi-table connection method and system based on processing lines. The distributed multi-table connection method comprises following steps, executed in parallel, that a mapping processing unit reads tables to be connected, and carries out mapping processing on the tables to be connected to obtain corresponding data blocks, and outputting the tables to be connected in a manner that any two tables to be connected form a group; a second reducing processing unit reads the data blocks of the second group of tables to the last group of tables in order, and carries out hash connection on the two data blocks of each group of tables to obtain the two-table connection result of the two tables of each group; a first reducing processing unit reads an initial multi-table connection result after the two data blocks of the first group of tables are subjected to hash connection, and after a second reducing machine group completes hash connection of one group of tables, the first reducing processing unit sequentially connects the current multi-table connection result with the two-table connection result of the group of tables until all groups of tables are connected. By executing processing lines in parallel, query operation and self-adaptive division can be achieved at the same time, and connection of multiple tables can be completed quickly and efficiently.
Owner:工创集团有限公司

A power transmission line patrol and maintenance cost calculation method and device

The invention discloses a power transmission line patrol and maintenance cost calculation method and device, and the method comprises the steps of obtaining patrol and maintenance information of a to-be-patrolled and maintained power transmission line, and the patrol and maintenance information comprises power transmission parameters and environment parameters of the to-be-patrolled and maintained power transmission line; obtaining the labor cost of the to-be-patrolled power transmission line according to the power transmission parameters and the environmental parameters; obtaining the development workload of the publishing platform; obtaining the development duration of the publishing platform; obtaining the maintenance cost of the publishing platform; according to the development workload, the development duration and the maintenance cost, obtaining the development cost of the to-be-patrolled power transmission line; and according to the labor cost and the development cost, calculating the patrolling and maintenance cost of the to-be-patrolled and maintained power transmission line. Therefore, the patrol and maintenance cost of the power transmission line can be accurately calculated, excessive expenditure is avoided, and the cost is reduced.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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