32results about How to "Expand effective coverage" patented technology

The invention discloses a downlink mode of transmission, network devices and a wireless device in the coordinated multiple-point transmission systems. The method includes the following steps: make clear the correspondent downlink physical resources and downlink mapping rules to the established sending physical downlink data channel and / or reference signal of the cooperation community. The downlink channel and / or reference signal are mapped to the downlink physical resources according to the downlink principles and then delivered to the terminals. The embodiment of the invention can expand the effective coverage, and to avoid interference between different communities.

The invention discloses a relay communication system utilizing regenerable energy power supply and an energy-saving mode. The relay communication system is characterized in that traditional power grid energy supplies power for a base station, regenerable energy collected by an energy collecting device supplies power for a relay, and the relay processes received signals and forward the received signals; in a downlink link, the relay periodically sends channel state information and current energy storage to the base station, and the base station determines to select a direct connection transmission mode or a relay transmission mode according to load information, information fed back by the relay and the channel conditions and conducts corresponding downlink resource distribution; in an uplink link, the relay periodically sends the state information of channels from a user to the relay and the current energy storage to the base station, the base station combines the information, the load information and state information, of channels from the relay to the base station and from a user to the base station, obtained by self-estimation to choose a direct connection transmission mode or a relay transmission mode, and conducts corresponding uplink link source distribution. By the adoption of the method, communication quality can be ensured, and non-renewable energy consumption can be saved.

The invention discloses a base station system which comprises a baseband unit and radio frequency remote units. The baseband unit is provided with an aggregating unit, a merging unit and a processing unit. The aggregating unit is used for acquiring baseband signals from multiple radio frequency remote units; the merging unit is used for merging the baseband signals of multiple predetermined radiofrequency remote units according to the identification information of the multiple predetermined radio frequency remote units; and the processing unit is used for processing the merged baseband signals. Furthermore, the invention also discloses a baseband unit, a processing method of the baseband signals and a device thereof. The baseband signals of the multiple predetermined radio frequency remote units are merged into a signal such that the multiple predetermined radio frequency remote units are logically regarded as a logic entity by a high layer, thus realizing the use of the multiple predetermined radio frequency remote units as a logic cell, expanding the effective coverage area of the logic cell, and further reducing the frequency of the cell reselection and the cell switching.

The invention relates to a sound box, in particular to a wireless smart sound box based on WIFI connection. The wireless smart sound box based on WIFI connection comprises a box body, a tweeter and a woofer, wherein the tweeter and the woofer are arranged on the box body. A master control processing module is arranged in the box body. The master control processing module is electrically connected with a WIFI module, a WAN port, a storage for storing routing configuration data, a play control module for controlling audio play and an audio decoder. The audio decoder is further electrically connected with a power amplifier, an audio output end is connected to the power amplifier, and the power amplifier is electrically connected with the tweeter and the woofer. The WIFI module is further connected with an antenna. By the adoption of the wireless smart sound box, a smart device can be directly connected to the wireless smart sound box through WIFI connection for music play, high-quality audio files stored in smart phones and tablet computers can be played, high-quality online audio such as audio of a lossless format can be played, the smart phones, the tablet computers and other devices are made to break through limitation of storage space, and the application range is further widened.

The invention discloses an omni-directional ceiling antenna. The omni-directional ceiling antenna comprises a cone column-shaped radiation oscillator, a cone column-shaped reflector, a plate column-shaped bottom plate and an insulating medium ring, wherein the reflector comprises a first hollow cone and a first cylindrical ring, the flared end of the first hollow cone is connected with the first cylindrical ring, and the outer diameter of the first cylindrical ring is less than that of the first hollow cone; the bottom plate is provided with a second cylindrical ring, and the second cylindrical ring and the first cylindrical ring are connected in a sleeve mode to form a space isolating coupling structure; an insulating medium ring is arranged between the second cylindrical ring and the first cylindrical ring to separate the reflector from the bottom plate and support and fix the reflector and the bottom plate. The omni-directional ceiling antenna solves the problem that high-frequency signals of an ultra-wide-band indoor omni-directional antenna are gathered downward, enables the effective cover range of high-frequency signals to be expanded, enables indoor signals to be distributed more uniformly, enables the electromagnetic radiation intensity under the antenna to be lowered effectively and enables the indoor electromagnetic environment safety to be guaranteed.

The invention discloses an ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna, and mainly solves the problems of wide frequency band, omnidirectional horizontal polarization and miniaturization of an antenna cannot be satisfied in the prior art. The ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna comprises a radiation unit (1), a feeding network (2) and a dielectric plate (3), wherein the radiation unit (1) is a 16-element connecting type Vivaldi antenna array which is formed by a Vivaldi unit around a center in a rotating manner; the feeding network (2) adopts a one-into-sixteen broadband Wilkinson power divider and a coupling microstrip feeder line; electromagnetic energy is coupled to the radiation unit through the coupling microstrip feeder line; the dielectric plate (3) adopts a Kangtaini (a Chinese brand name)dielectric plate with a dielectric constant of 2.55; the radiation unit and the feeding network are printed on the upper and lower surfaces of the dielectric plate; and the centers of the radiation unit and the feeding network coincide with that of the dielectric plate. The circular array antenna has the characteristics of ultra wide band, omnidirectional horizontal polarization and miniaturization, and can be used in a full-coverage ultra-wide-band wireless communication system in the peripheral regions.

The invention relates to an information classification method and apparatus, a computer device and a storage medium. The method comprises the steps of obtaining to-be-classified information, and performing word segmentation on the to-be-classified information to obtain a corresponding original word set; obtaining synonyms corresponding to original words in the original word set, and forming extended word sets by the original words and the corresponding synonyms, wherein each original word has the corresponding extended word set; according to the extended word sets corresponding to the originalwords, forming extended classification information sets corresponding to the to-be-classified information; and inputting the extended classification information sets to a trained multi-classificationmodel to obtain a target category corresponding to the to-be-classified information. By adopting the method, the information classification accuracy can be improved.

The invention discloses a public signal transmission method and device in hybrid beamforming technology, wherein the method comprises following steps of obtaining to-be-sent analog public signals; specific to different radio frequency chains, selecting different code words from an analog beamforming codebook as analog beamforming vectors; carrying out analog beamforming on the to-be-sent analog public signals on different radio frequency chains by utilizing the analog beamforming vectors; and sending out the public signal beams on the radio frequency chains after the analog beamforming. According to the technical scheme provided by the invention, the effective range coverage of the public signals in the hybrid beamforming technology can be realized.

The invention relates to a coal seam extraction drilling hot-cold impacting coal-breaking permeability-increasing device. The coal seam extraction drilling hot-cold impacting coal-breaking permeability-increasing device comprises a bearing base, a traveling mechanism, a liquid nitrogen storage steel bottle, a gaseous nitrogen storage steel bottle, a water storage tank, a hot-air blower, booster pump assemblies, nitrogen heating pipes, water cooling pipes and liquid nitrogen cooling pipes. The lower surface of the bearing base is connected with the traveling mechanism, and the liquid nitrogen storage steel bottle, the gaseous nitrogen storage steel bottle, the water storage tank, the hot-air blower and the booster pump assemblies are slidably connected with the upper surface of the bearing base through a slide rail. A fracture impacting assembly is formed by each nitrogen heating pipe, the corresponding water cooling pipe and the corresponding liquid nitrogen cooling pipe. The fracture impacting assemblies communicate with the two booster pump assemblies. A permeability-increasing method of the coal seam extraction drilling hot-cold impacting coal-breaking permeability-increasing device comprises the steps such as drill hole forming, fracture impacting assembly prefabricating, impacting fracture operation and extraction operation. According to the coal seam extraction drilling hot-cold impacting coal-breaking permeability-increasing device and the permeability-increasing method, on the one hand, drilling gas extraction efficiency is improved, gas extraction cost is reduced, and on the other hand, safety and reliability of gas extraction operation are improved.

The invention relates to a system information processing method and device, computer equipment and a storage medium. The method comprises the following steps that: monitoring system information published by a terminal, and carrying out word segmentation on the system information to obtain a corresponding original word set, wherein the original word set comprises a plurality of original words; carrying out synonymy expansion on each original word to generate an expanded word set corresponding to each original word; according to each expanded word set, forming an expansion system information setcorresponding to the system information; inputting the expansion system information set into a preset system management model to obtain a target category corresponding to the system information; obtaining category annotations independently corresponding to a plurality of target information trees, screening the target information tree which contains the category annotation corresponding to the target category, and adding the system information to the target information tree obtained by screening. By use of the method, system information classification efficiency and accuracy can be improved.

The invention discloses a transmission signal preprocessing transmission method and device. The transmission signal preprocessing transmission method is applied to a wireless communication system comprising a first transmission terminal and a second transmission terminal both of which participate in cooperation, and comprises the following steps of: calculating each optimal pre-coding vectors W1, k and W2, k independent to the kth user respectively according to measured or fed back kth user downlink channel coefficient matrix H1, k and H2 through the first transmission terminal and the second transmission terminal; without carrying out phase rotation on a transmission signal of the first transmission terminal, i.e., a phase rotation matrix R1 is equal to 1, calculating a phase rotation matrix R2 of the second transmission terminal through the final precoding vector of the first transmission terminal, and calculating a final precoding vector ej theta of the second transmission terminal as a phase rotation factor according to the phase rotation matrix R2 of the second transmission terminal; and according to a final precoding vector and a transmission side processing weight as a processing transmission signal, multiplying by each original transmission signal as a final transmission signal to be transmitted out through an antenna. According to the invention, a multipoint transmission technology is effectively utilized, the interference of a cell edge is reduced, and the frequency spectrum efficiency of the cell edge is improved.

The invention discloses a downlink signal preprocessing transmission method and device. The downlink signal preprocessing transmission method comprises the following steps that: a transmission end i acquires a channel coefficient matrix Hi between the transmission end i and a user, wherein Hi belongs to C<NR*NTi>, and represents a complex coefficient matrix, NR represents a receiving antenna number of the user, and NTi represents a transmission antenna number of the transmission end i; the transmission end i acquires an optimal precoding matrix Wi by utilizing the channel coefficient matrix Hi, wherein Wi belongs to C<NR*di> and represents the complex coefficient matrix, and di represents a transmission data stream number of the transmission end I; and the transmission end i calculates a rotation matrix Ui of the transmission end by utilizing all acquired channel coefficient matrixes H1,..., the precoding matrixes W1,..., Wi, and the rotation matrixes U1,..., Ui-1 in mutually cooperative transmission ends, wherein the rotation matrix is U1 and is a unit matrix when i is equal to 1; the transmission end calculates a final precoding matrix W<new>i=WiUi according to the precoding matrix Wi and the rotation matrix Ui; and preprocessing the transmitted data, and transmitting the data through an antenna interface. The method and device disclosed by the invention have the advantages of reducing the interference of a cell edge, improving the frequency spectrum efficiency of the cell edge and increasing the effectively coverage range of a cell.

The invention provides a switching device used for controlling an engine of a vehicle. The switching device comprises a button, a decorative ring, a slider structure, a ferrite internal pellet and a coil. The coil used for sending and receiving signals is wound around the ferrite internal pellet, so that the magnetic field intensity of the coil is increased, and the effectively covering area of the coil is enlarged; the vehicle can realize multiple functions by utilizing the same coil, so that the number of antennae is reduced, and the complexity degree and the cost of the system are reduced.

The invention provides a method and system for a mobile terminal to receive a call of a fixed-line telephone and a binding method and system thereof. A smart phone which is very widespread currently is adopted to replace a special extension set of a conventional cordless telephone, so as to fulfill the aim of cordless conversation, further facilitate carrying about and meanwhile, also save cost ofthe special extension set. The methods provided by the invention adopts a universal local area network connection mode to replace a special communication mode of the conventional cordless telephone,and have higher anti-interference performance and a greater audio transmission bandwidth than the conventional cordless telephone; and meanwhile, a local area network has a relay function, and thus, an effective coverage range of the extension set is greatly expanded.

The invention discloses a gas shield device for argon arc welding of a titanium material. The gas shield device comprises a nozzle, a ceramic nozzle and a contact tube, wherein the nozzle is sleeved with the ceramic nozzle through a thread, one end of the contact tube is fixed in the nozzle, the nozzle is internally provided with eight distribution holes with the contact tube as a center, the distribution holes are arranged into a ring, the end of the nozzle is provided with a protection cover structure internally provided with a cavity, the end of the nozzle is further provided with two 200-mesh stainless steel screens, and the other end of the contact tube extends out of the nozzle. The gas shield device effectively achieves air isolation, gas dispersion is more uniform, airflow is more stable, a better protection effect is achieved, and the welding effect is good.

The invention provides a fire alarm remote monitoring system and a fire alarm remote monitoring method, and relates to the technical field of fire alarm. The system comprises fire detection alerters and a remote fire-fighting monitoring platform. There are multiple fire detection alerters which are connected in a communication way by an LORA-based wireless network. Multiple fire detection alertersare connected with the remote fire-fighting monitoring platform in a communication way by the wireless network so as to feedback the fire alarm information to the remote fire-fighting monitoring platform. The method comprises the steps that the fire alarm information collected by the fire detection alerters is summarized by the LORA-based wireless network and then fed back to the remote fire-fighting monitoring platform by the LORA wireless gateway. Or the fire alarm information collected by the fire detection alerters is summarized by the LORA-based wireless network and fed back to the remote fire-fighting monitoring platform by the NB-IOT network. The system can perform real-time monitoring and can quickly respond to the fire so as to be suitable for the old communities. The two methodsare suitable for fire monitoring of the old communities so as to be quick and convenient and low in cost.

The invention provides an ultrasonic detection wedge block, comprising a working surface and a connecting surface on front and back sides, wherein the shape of the working surface of the ultrasonic detection wedge block comprises one or more jagged steps, a rising surface of each step is a focusing surface or plane, and a falling surface is a plane; the rising surface of the step is obliquely arranged, so that the direction of a sound beam emitted by an ultrasonic probe can be changed, and oblique incidence of ultrasonic waves can be achieved on a workpiece; and the plurality of jagged steps can divide a single sound beam emitted by the ultrasonic probe into several sound beams. The invention further provides a method for improving the effective coverage of a sound field of the ultrasonicprobe, wherein the ultrasonic detection wedge block is attached above the ultrasonic probe; and the sound beam of the ultrasonic wave emitted by the ultrasonic probe is divided by the ultrasonic detection wedge block to form a plurality of sound beams, and meanwhile the workpiece is detected. By adopting the method provided by the invention, the effective coverage of the sound field of the ultrasonic probe can be increased, and the consistency of detection signals is improved.

The invention provides a method and a system for measuring the three-dimensional distribution of a high-voltage electric field. In the system, an attitude sensor detects the angle vector deviation value of the current position of a mounting body relative to the original calibration position in real time, an electric field sensor measures the electric field intensity value at the current position under the current angle vector deviation value, the matching and calculation of the electric field intensity distribution information at the original calibration position relative to a detection systemare completed, and finally, the three-dimensional distribution information of a high-voltage electric field is measured. According to the detection system and method, on the premise that the number of the electric field sensor is not increased, the effective coverage range of electric field detection is enlarged, the portability and usability of the detection system and method are guaranteed, andmore comprehensive protection is provided for detection personnel. Because of the arrangement of a holder capable of freely rotating in the detection system provided by the invention, the electric field measurement device does not have a detection blind area, and the problem of false alarm or missing alarm caused by the detection blind area is avoided.

The present invention provides an omnidirectional ceiling antenna, which includes a cone-shaped radiating oscillator, a cone-shaped reflector, a disc-shaped bottom plate, and an insulating dielectric ring; wherein the reflector includes a first hollow cone and a first cylindrical ring , the flared end of the first hollow cone is connected to the first cylindrical ring, and the outer diameter of the first cylindrical ring is smaller than the outer diameter of the flared end of the first hollow cone; a second cylindrical ring is arranged on the bottom plate, and the second cylindrical ring is connected to the first cylindrical ring. The cylindrical rings are socketed to form a space-isolated coupling structure; the insulating dielectric ring is arranged between the second cylindrical ring and the first cylindrical ring to realize isolation and support and fixation between the reflector and the bottom plate. The invention solves the problem that the high-frequency signal of the ultra-broadband indoor omnidirectional antenna gathers downward, not only expands the effective coverage of the high-frequency signal, makes the indoor signal distribution more uniform, but also effectively reduces the electromagnetic radiation intensity under the antenna, ensuring indoor Safety in the electromagnetic environment.

The invention relates to a multiplex device and a multiplex method that support energy diffusion; the multiplex device comprises a multiplexer and an energy diffuser. The multiplexer multiplexes various data information into different logic channels to form a multiplex frame which comprises a multiplex frame header, a multiplex frame payload and a filling part. The energy diffuser conducts energydiffusion treatment to the filling part to randomize the data in the filling part. The multiplex device and the multiplex method that support energy diffusion of the invention can enhance the transmitting power of a CMMB transmitting system under the modulation of 16QAM, thus increasing the effective covering scope of a transmitting tower.

The present application relates to an information classification method, device, computer equipment and storage medium. The method includes: obtaining information to be classified, performing word segmentation on the information to be classified to obtain a corresponding set of original words; respectively obtaining synonyms corresponding to each original word in the set of original words, and forming extended words from the original words and corresponding synonyms Each original word has a corresponding set of extended words; according to the set of extended words corresponding to each original word, the set of extended classification information corresponding to the information to be classified is formed; the set of extended classification information is input into the trained multi-classification model The target category corresponding to the information to be classified is obtained, and the method can improve the classification accuracy of the information.

The present invention provides a method for dynamically delivering rules in a software-defined network, including S1. constructing a set of rule sets R into several rule subsets RS, so that the rules in each rule subset RS satisfy a complete hierarchical nesting relationship, and Each rule subset RS is generated as a complete hierarchical nesting tree; S2. According to the complete hierarchical nesting tree generated by each rule subset and the uploaded network package, construct the corresponding delivery rules; S3. Issue the above-mentioned construction The rules perform the geometric space "intersect" operation to obtain the final single delivery rule, and then perform the rule delivery operation. The method for dynamically issuing rules in software-defined networks according to the present invention can greatly improve the effective coverage of the flow of issued rules on the premise of ensuring the consistency of decision-making between the control plane and the data plane, significantly save device memory usage, and reduce the number of rules. The incidence of deletions.

The application relates to a system information processing method, device, computer equipment and storage medium. The method includes: monitoring the system information released by the terminal, and segmenting the system information to obtain a corresponding original word set; the original word set includes a plurality of original words; performing synonymous expansion on each original word, and generating an extended word corresponding to each original word Word set; form the extended system information set corresponding to the system information according to each extended word set; input the extended system information set into the preset system management model to obtain the target category corresponding to the system information; obtain the category labels corresponding to multiple target information trees , to filter the target information tree containing the label corresponding to the target category, and add the system information to the filtered target information tree. This method can regulate the efficiency and accuracy of information classification.

Disclosed is a method for pre-processing and transmitting a downlink signal. The method comprises: a transmitting end i acquiring a channel coefficient matrix H i between the transmitting end i and a user equipment, being a complex coefficient matrix, N R representing the number of receiving antennas of the user equipment, and representing the number of transmitting antennas of the transmitting end i; the transmitting end i acquiring an optimal pre-coding matrix W i through the channel coefficient matrix H i , being a complex coefficient matrix, and d i representing the number of data streams transmitted by the transmitting end i; the transmitting end i calculating a rotation matrix U i of the transmitting end i by using all acquired channel coefficient matrices H 1 , ..., H i , pre-coding matrices W 1 , ..., W i , and rotation matrices U 1 , ..., U i -1 of transmitting ends cooperating with one another, when i = 1, the rotation matrix being U 1 which is a unit matrix; the transmitting end calculating a final pre-coding matrix according to the pre-coding matrix W i and the rotation matrix U i ; and pre-processing, through, data to be transmitted, and transmitting the data through an antenna port. Through the present invention, interference of a cell edge is reduced, spectral efficiency of the cell edge is improved, and effective coverage of a cell is increased.

The invention discloses a base plate device of an industrial water jet machine. The structure of the base plate device comprises a rectangular mounting base plate; a radiating grating array composed of radiating gratings is arranged on the mounting base plate; a fixing threaded hole is formed in one sidewall of the mounting base plate; a coupling bolt is arranged on the fixing threaded hole; a movable water nozzle is arranged on the head of the coupling bolt; a rotatable fixed shaft is arranged at the tail of the mounting tail. Due to rotatable fixation, a user can adjust a set angle of the whole base plate device; the movable water nozzle is adopted to realize large-area water flow jetting so that an effective coverage range of the existing industrial water jet machine can be greatly improved; additionally, the base plate device is easy to demount, convenient to repair and high in practicability.

A method and an apparatus for preprocessing and transmitting transmission signal are disclosed in the invention. The method includes that: W 1,k and W 2,k , which are the independent and optimal pre-coding vectors of a first transmission terminal and a second transmission terminal to the kth user, are calculated by the first transmission terminal and the second transmission terminal respectively according to downlink channel coefficient matrixes H 1,kand H 2,k of the kth user acquired through measurement or feedback; phase circumrotation is not performed for the transmission signal of the first transmission terminal, that is, the phase circumrotation matrix is R1=1, and a final pre-coding vector of the first transmission terminal is W ~ 1,k=W 1,k; a phase circumrotation matrix R2 of the second transmission terminal is calculated, and a final pre-coding vector of the second transmission terminal is calculated by W ~ 2,k= W 2,k°e j? according to the phase circumrotation matrix R2 of the second transmission terminal, wherein e j? is a phase circumrotation factor; the final pre-coding vectors W ~ 1,k and W ~ 2,k are made as processing weight values of the transmission sides which are used to multiply the respective original transmission signals, and the obtained results by multiplying are transmitted through antennas as final transmission signals. The invention reduces interference at the edge of cells and improves the frequency spectrum efficiency at the edge of cells.