120results about How to "Improve coverage efficiency" patented technology

The invention discloses a single-antenna RRU (remote radio unit) comprising one or a plurality of radio-frequency far ends and an IR processing unit, wherein each radio-frequency far end is connected with an antenna, a received uplink analog radio-frequency signal is processed into an uplink digital intermediate-frequency signal, the uplink digital intermediate-frequency signal is transmitted to the IR processing unit, a downlink digital intermediate-frequency signal from the IR processing unit is received and is processed into a downlink analog radio-frequency signal, and the downlink analogradio-frequency signal is transmitted to the antenna. Simple protocol transmission is adopted between the radio-frequency far ends and the IR processing unit. The IR processing unit processes the uplink digital intermediate-frequency signal from each radio-frequency far end into an uplink digital baseband signal, the uplink digital baseband signal is transmitted to a BBU, a downlink digital baseband signal from the BBU is processed into a downlink digital intermediate-frequency signal, and the downlink digital intermediate-frequency signal is transmitted by selecting one of all the radio-frequency far ends. By adopting the single-antenna RRU, a plurality of radio-frequency far ends can be adopted to carry out coverage, so that the transmission capacity of the RRU can be expanded.

The invention relates to an autopilot vehicle transportation coordination virtual testing system and testing method. A system hardware-in-the-loop simulation testing method is planned, a correspondinginteractive testing scenario is arranged in a virtual simulation platform according to test requirements, one or more autopilot vehicle intelligent controllers are to-be-tested subjects, and occupants of a virtual to-be-tested vehicle and other virtual transportation participants are introduced through methods, such as a driving simulator and a VR device, to simulate the multi-vehicle interactionscene under complex traffic stream. Trajectories of all virtual transportation participants, including that of the virtual to-be-tested vehicle, subjective judgments of the controllers of the virtualto-be-tested vehicle occupants and other virtual transportation participants, and various physiological indicators related to interaction comfort are collected, multi-scenario autopilot vehicle transportation coordination tests at different penetration rates are undergone to verify whether the autopilot vehicle is capable of interacting well with other transportation participants during driving or not.

The embodiment of the invention relates to the field of communication, and discloses an antenna system and a mobile terminal. The antenna system is applied to the mobile terminal. The antenna system comprises a first feeding point which is arranged on a circuit board, a first millimeter wave array antenna which is electrically connected to the first feeding point, a second feeding point, a secondmillimeter wave array antenna which is electrically connected to the second feeding point, a third feeding point, a third millimeter wave array antenna which is electrically connected to the third feeding point, a fourth feeding point, and a fourth millimeter wave array antenna which is electrically connected to the fourth feeding point, wherein the beam of the first millimeter wave array antennacovers the space (X is more than 0); the beam of the second millimeter wave array antenna covers the space (X is less than 0); the beam of the third millimeter wave array antenna covers the space (Y is more than 0); the fourth millimeter wave array antenna covers the space (Y is less than 0). According to the system, the beam covering range in the surrounding space of the mobile terminal is expanded, so that the space radiation covering rate of the antenna is increased, and the capacity of receiving signals by the mobile terminal is improved.

The invention provides a method and a system for laying of indoor antennas. The method includes confirming an initial value of antenna quantity; obtaining the optimal laying position point scheme of the antennas of current antenna quantity by utilizing the multi-target evolutionary algorithms; and regulating the antennal quantity, obtaining the optimal laying position point scheme of the antennas of different antenna quantity, finding the optimal laying position point scheme having minimum antennal quantity, and obtaining the finial laying scheme of the indoor antennas. The method and the system can reduce achieving complexity of the laying of the indoor antennas, improves a covering effect, and reduces equipment cost.

The invention discloses a method for separating and enriching micro circulating tumor cells (circulating tumor cells, CTCs) in whole blood for further providing a basis for subsequent study of tumor cells, and relates to the biomedical field. The method comprises the following steps of: covalent coupling of dendrimers and matters (special matters) specifically combined with target cells; further coating long-chain biotin molecules by dendrimers modified by the specific matters; capturing CTCs in a whole blood sample by dendrimers co-modified by the special matters and the long-chain biotin; identifying and coupling long-chain biotin dendrimers in the whole blood by streptavidin modified nanomagnetic beads; and separating and resuspending the captured CTCs. The resuspension can be directly used for subsequent analysis. Compared with conventional cell separation methods, the method is more suitable for magnetic separation of CTCs in complex whole blood samples, so that the magnetic separation time is shortened, and the CTCs separation efficiency in the whole blood sample is improved.

The invention discloses a coverage hole detection and repair method of a dynamic sensor network based on a Sub-Voronoi graph area method. The method provides an algorithm for dividing a Voronoi unit into sub-Voronoi units and calculating a coverage hole area within each sub-Voronoi unit and a candidate movement position within a maximum sub-area facing to the area hole to detect and repair the coverage hole in the dynamic sensor network; two algorithms are respectively used for calculating the candidate movement positions used for repairing the coverage hole within the Voronoi polygon of each node, and the candidate movement positions are respectively SVHG and SVHI; and the algorithm can be used for accurately estimating the position of the coverage hole in the Voronoi unit, accurately calculating the area of the hole within each Voronoi unit and quickly maximizing the area coverage efficiency at the same time, so as to repair the hole and maximize the network utilization rate.

The invention discloses a method, a device, and a system for copyright authentication of digital resources, and a storage medium, used for authentication of digital resources propagated in a network,and improving efficiency of copyright authentication of digital resources, and providing support for right protection by a copyright party. The method for copyright authentication of digital resourcesis applied in a block chain network, and the block chain network includes authentication nodes and storage nodes. The method comprises: the authentication node scanning digital resources propagated in a network; if the authentication node determines the scanned digital resource is a copyright protection resource, reading copyright circulation information corresponding to the digital resource fromthe storage node; the authentication node determining an authentication result according to the read copyright circulation information; and the authentication node storing the authentication result into the storage node.

The invention discloses a multi-target path coverage test method for improving individual information sharing and an implementation system, and the method comprises the steps: 1, building a mathematical model of a multi-path coverage problem through a fusion individual information sharing improvement method, so as to mine the value of each sub-population; 2, generating a genetic algorithm by usingthe multipath coverage test case; improving a path coverage strategy of individual information sharing; sorting various groups in the group set according to the coverage effect; and the calculation amount of the path difficult to cover is reduced through a comparison method of the individual relation matrix. Compared with a traditional multi-population path coverage method, the method has bettereffects in the aspects of coverage rate, accuracy and time. By means of the population individual information sharing strategy, the problem that the calculated amount is increased due to the fact thatmultiple sub-populations exist is greatly solved, and on the aspect of processing of paths difficult to cover, the covering efficiency of the target path set is effectively improved through the proposed method.

The invention discloses a method for directly separating CD<4+> and CD<8+> lymphocytes, lays a better foundation for the subsequent research on the CD<4+> and CD<8+> lymphocytes, and relates to the field of biomedicines. The method comprises steps of: multi-arm well and star-shaped polymer and mouse anti-human CD<4+> or CD<8+> monoclonal antibody covalent coupling, long-chain biotin molecule coating through utilizing a mouse anti-human CD<4+> or CD<8+> monoclonal antibody-modified multi-arm well and star-shaped polymer, peripheral blood sample CD<4+> and CD<8+> lymphocyte acquiring through utilizing a mouse anti-human CD<4+> or CD<8+> monoclonal antibody and long-chain biotin co-modified multi-arm well and star-shaped polymer, peripheral blood long-chain biotinylation multi-arm well and star-shaped polymer identifying and coupling through utilizing streptavidin-modified nano magnetic beads, captured CD<4+> and CD<8+> lymphocyte separating and suspending and the like. A suspension can be directly used for subsequent analysis; and compared with a conventional cell separating method, the method is suitable for magnetically separating complicated peripheral blood sample CD<4+> and CD<8+> lymphocytes, so that the peripheral blood sample CD<4+> and CD<8+> lymphocyte separation efficiency is increased.

The invention relates to an earthquake early warning method and device and a storage medium, and the method is applied to electronic equipment, and can comprise the steps: obtaining the current position information of the electronic equipment when earthquake information is received; obtaining target prompt information according to a relative position between the current position information and anearthquake position indicated by the earthquake information; and outputting the target prompt information. Through the technical scheme of the invention, the earthquake information is sent to the electronic equipment, the earthquake information is acquired by the positioning module on the electronic equipment, and the data contained in the earthquake information is combined with the current position information acquired by the positioning module on the electronic equipment, so that the disaster danger of the current position of the user can be predicted, strong early-warning reminding for theuser is realized by utilizing the functions of the electronic equipment, and the coverage range and efficiency of early-warning information are greatly increased.

The invention discloses a manufacturing process of a metal seated ball valve nickel-based tungsten carbide wear-proof coating. The manufacturing process includes the following steps that S1, the surfaces of workpieces are pre-treated, wherein a machined ball body and a machined valve seat are subjected to surface cleaning and coarsening; S2, a wear-proof coating is sprayed, wherein a wear-proof coating powder material is evenly sprayed to the surfaces of the ball body and the valve seat through a hypersonic flame spraying process; S3, heating and remelting are carried out, wherein the sprayedball body and the sprayed valve seat are put in a vacuum furnace in batches for heating and remelting, and the ball body and the valve seat are metallurgically bound with the wear-proof material; S4,cooling is carried out, wherein after being remelted, the ball body and the valve seat are slowly cooled along with the vacuum furnace; and S5, grinding is carried out, wherein the cooled ball body and the cooled valve seat are precisely ground in sequence through a grinding device. The strength of the wear-proof coating on the sealing face of a ball valve can be improved, then the wear-proof performance of the sealing face of the ball valve is enhanced, and the service life of the ball valve is prolonged.

The invention discloses a quick-recognition base station active switching trunking communication method and terminal. When the terminal sends an uplink request to a currently registered base station, the number of times of continuous failures of the uplink request is calculated. After the number of times of continuous failures of the uplink request reaches a preset upper limit value, the terminal scans a surrounding base station, and registers other useable base stations. According to the invention, the terminal employs an active scanning strategy, can quickly detect that the currently registered base station cannot be used and switch to a useable base station, and guarantees that the business of the terminal is not affected. The method improves the success rate of business initiation of the terminal.

The embodiments of the invention relate to the communication field and disclose an antenna system and a mobile terminal. The antenna system is applied to the mobile terminal. The antenna system comprises a first feeding point arranged on a circuit board, a first millimeter wave array antenna electrically connected to the first feeding point, a second feeding point, a second millimeter wave array antenna electrically connected to the second feeding point, a third feeding point, a third millimeter wave array antenna electrically connected to the third feeding point, a fourth feeding point and afourth millimeter wave array antenna electrically connected to the fourth feeding point. The wave beam of the first millimeter wave array antenna covers a space where Z is greater than 0. The wave beam of the second millimeter wave array antenna covers a space where the Z is less than 0. The wave beam of the third millimeter wave array antenna covers a space where X is greater than 0. The wave beam of the fourth millimeter wave array antenna covers a space where the X is less than 0. In the invention, the wave beam covering range of the antenna system to the spaces surrounding the mobile terminal is increased so that the space radiation covering rate of the antenna system is improved and a capability for the mobile terminal to receive signals is enhanced.

The invention discloses a fiery dragon fruit stem segments automatic batch cutting and planting mobile device. The device comprises a deck plate and two side plates, a fender is arranged on the innerside of each side plate, a mud removing impeller is arranged on the inner side of each fender; the fender and the mud removing impeller are installed on a mounting rod; the mounting rods are arrangedon a partition plate; both ends of the partition plate are connected to the side plates; a material falling tube is arranged between the mud removing impellers; a mud breaking cutter head is arrangedat the front end of the material falling tube; a hopper is connected to the upper end of the material falling tube; a mud pressing wheel is arranged at the back end of each mud removing impeller; a helical blade is connected to the front end of each mud removing impeller; mud shredding knives are arranged among each helical blade; the material falling tube is sleeved and connected with a swingingsleeve; pressing rods are arranged on the inner walls of the swinging sleeve, relative to the staggered position of the swinging sleeve and the material falling tube; the mud breaking cutter head comprises a front cutter face and a bottom cutter face; a drill is arranged at the front end of the mud breaking cutter head; a material cylinder tube is arranged at the lower end of the hopper; a material removing wheel is arranged on the upper side of the material cylinder tube, a material erecting plate is arranged at the lower end of the material cylinder tube. The device can realize that the stemsegments can be automatically and quickly inserted into mud beds and form a row, and the stem segments can be fixed automatically through soil, the operation is quick and convenient, the planting efficiency of the fiery dragon fruit stem segments is improved.

The invention relates to a test method for a mobile platform. The test method is characterized by comprising the following steps of: judging to correctly track the mobile platform according to a walking path video signal; reproducing a walking path, converting the walking path video signal into a moving track image, and dividing the moving track image into an overlapping area through which the mobile platform accumulatively passes and a non-overlapping area where the mobile platform does not pass through; and evaluating the walking path of the mobile platform according to the overlapping area information and displaying the overlapping efficiency of the mobile platform. The invention also relates to a test system for the mobile platform. The test system comprises a computer, and a video acquisition device and a display device which are connected with the computer respectively, wherein a display window of the display device comprises an overlapping efficiency displaying window used for displaying the evaluation information of the walking path and the overlapping efficiency of the mobile platform. The test method and the test system for the mobile platform can more precisely acquire the walking path track and overlapping efficiency of the mobile platform and effectively evaluate the overlapping algorithm and working efficiency of the mobile platform so as to provide reference for improving the path planning algorithm and working efficiency of the mobile platform.

The invention relates to a digital multipoint distribution system and a transmission processing method thereof. According to the digital multipoint distribution system, a near-end access unit is composed of a power module, a monitor panel, a frequency conversion module, a medium frequency processing portion and a modem; a system expansion unit is composed of a power supply, a monitor panel, an interface conversion portion and a medium frequency processing portion; a system far-end unit is composed of a medium frequency portion, a frequency conversion module and a radio frequency amplifying portion. The transmission processing method of the digital multipoint distribution system is composed of the steps including system near-end unit transmission, system expansion unit transmission and system far-end transmission. The digital multipoint distribution system and the transmission processing method thereof solve the problems of incapability of achieving multiple-network common access, multiple-network coexisting interference, poor indoor telephone traffic absorption capacities and the like and has the advantages of multiple-network co-construction, resource sharing and construction investment sharing, low noise introduction, better signal coverage quality, convenient design, simple construction, energy conservation, emission reduction, operating cost reduction and the like.

The invention relates to a using method of a wooden organic ground surface mulch. Due to the application of the existing wooden organic ground surface mulch, forests suffer from pest and disease damage, rodents are bred, the health condition of the forests is reduced and the forest benefit is reduced. The using method of the wooden organic ground surface mulch comprises the following steps of: a step of observing and studying an organic covering scene; a step of determining the type of the mulch and covering time; a step of implementing coverage, which comprises determination of a coverage range, preparation of a coverage region and coverage construction. In the step of implementing coverage, a crown projection region of a planted tree is used as the coverage range and a distance which is2 times to 3 times of the diameter of a plant pit is used as the coverage region of a newly planted tree; before covering, the weeding and irrigation are carried out in the coverage region and the sterilization treatment is carried out on a covering material; and during the coverage construction, the mulch is covered around by taking a trunk as the center to form a covering layer, the covering layer is at a distance of 10 to 25cm from the base part of the trunk and the covering layer has the thickness of 5 to 10cm. Due to the implementation of the method, when the nutrition is provided for the tree, the tree is ensured healthy.

The invention discloses a power plastic mulching machine, relates to a small size agricultural machinery, a plastic film roller and a tight roll are arranged to unfold a plastic film, a pressed film roller and a pressed film wheel are used to press the plastic film lightly on a working surface, and soil is covered on both sides of the plastic film by a covering ploughshare. In the invention, an electric motor or a fuel engine is used as power supply, the plastic mulching efficiency is increased, the intensity of labor is reduced, the mulching for each acre field can be finished by one person in 0.5h, and the invention also has small structure, convenient operation and low manufacturing cost, and is used widely in mountain areas and rolling countries.

The invention relates to a mobile robot full-coverage path planning method, a chip and a robot, and the method comprises the following steps: S1, the robot detects an obstacle in a cleaning region, generates a map containing obstacle information, and divides the map into a plurality of sub-blocks; S2, the robot plans a cleaning path in the sub-block; and S3, the robot determines the initial sub-blocks and performs cleaning, then calculates the path cost between the sub-blocks, selects the next cleaning sub-block according to the path cost, and cycles the step until cleaning of all the sub-blocks is completed. According to the new full-coverage path planning method, the calculation complexity can be reduced, and the coverage efficiency of the robot is improved.

The disclosed multiple subzone/sector broadcast message transmission method in OFDM system comprises: A. the current subzone/sector maps its broadcast message to the first sub-carrier set in sub-carrier set; and B. transmits the subzone/sector broadcast message to the receiving end through the sub-carrier set. This invention can reduce the channel interference on subzone/sector edge user.

The invention discloses a mulching device which comprises a frame. A hanging ring is arranged at the front end of the frame. A mulch rack is mounted on the frame. A road wheel mounting beam is arranged in the front of the mulch rack. Road wheels are mounted at two ends of the road wheel mounting beam respectively. A press wheel mounting beam is arranged in the rear of the mulch rack. Wheel carriers are disposed at two ends of the press wheel mounting beam respectively. A press wheel and a press share are mounted on each wheel carrier, and the press share extends to the rear of the frame. The mulching device is used by being hung to the rear of an agricultural tractor, mulch is mounted on the mulch rack, the road wheels can make two tracks on soil, two sides of the mulch are located above the tracks and are pressed into the tracks by the press wheels, and the two edges of the mulch are compacted with the soil by the press shares. The mulching device is simple in structure and convenient to use and can be operated by a single operator to lay the mulch, mulching efficiency can be increased, and the number of laborers is reduced.

The invention discloses a sweeping path planning navigation algorithm applied to a sweeping robot with a low-cost chip. The algorithm is characterized by comprising a control layer and an algorithm layer, and comprises the following steps of: 1, the sweeping robot is started; 2, the control layer of the sweeping robot initializes a plan module in the algorithm layer, the algorithm layer returns avalue of the plan module to a pathPlan structural body in the control layer, and the pathPlan structural body is stored; 3, the sweeping robot enters a bow sweeping mode; 4, a current coordinate is calculated, whether the sweeping robot is collided is detected, an advancing mode of the algorithm layer is acquired according to a detection result, and Action is returned; 5, the Action is led into the control layer, and edge or along-line control is used according to the method; and 6, the sweeping robot judges whether sweeping is finished, and if NOT, the step 4 is returned to.