53results about How to "Improve coverage" patented technology

Apparatus, methods and computer program products that support inter-PLMN coordination in registration and handover operations are provided. Hysteresis is introduced in registration of radioterminals in a hybrid terrestrial / satellite mobile communications environment. Inter-PLMN handover techniques are provided, including techniques for coordination of communication of timing information and traffic channel controls.

A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.

This document presents a wireless location tracking system comprising a plurality of location tracking nodes to cover an area where the location tracking is to be carried out, wherein the location tracking nodes are configurable to form a static communication network infrastructure for routing communication messages; at least one mobile tag being location-tracked; and a control apparatus configured to receive through the communication network infrastructure a message associating said at least one mobile tag to at least one location tracking node and to map the location of the mobile tag on the basis of said association. The system further comprises at least one radio beacon node disposable to improve the coverage of the location tracking system.

Embodiments of methods and systems for using both new and older modulation schemes in PLC networks—thereby supporting legacy systems—are disclosed. In one embodiment, common frames that need to be understood by all nodes to support the network will be sent two or more times using different modulation techniques. For example, all broadcast frames, such as beacon requests, beacons, and route requests may be transmitted once with differential modulation and once with coherent modulation. In one configuration, the beacons with differential modulation may be transmitted in one beacon period, and the beacons with coherent modulation may be transmitted in another beacon period. In another configuration, the differential and coherent beacons for a particular tone mask are transmitted one after the other and before any other tone mask beacon is transmitted.

A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and / or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and / or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

A method of providing an electrically conductive polymer coating on a copper clad circuit board prior to electroplating is disclosed. The method teaches the application of certain organic solvents to a conductive polymer composition already applied to the board but before drying the conductive polymer composition to remove liquids therefrom to form a conductive polymer film.

The invention relates to the technical field of optics, and particularly relates to an optical brightness enhancement film applied to a liquid crystal display, so as to solve the problems that the existing brightness enhancement film is likely to scratch and optical interference is likely to happen. The optical brightness enhancement film provided by the invention comprises a substrate layer and a light-gathering microprism structure layer, wherein the light-gathering microprism structure layer is bonded on the surface of the substrate layer; the light-gathering microprism structure layer comprises a plurality of microprism columns; each microprism column is provided with a crest line with a high height and two valley lines located at the left side and the right side of the crest line and low heights, and the valley lines of adjacent microprism columns are mutually overlapped; the angle of the crest line of the microprism column is called a microprism crest angle; the microprism crest angle is provided with arc-shaped convex structures symmetric relative to the microprism crest angle; and the surface profile in the cross section of the arc-shaped convex structure is arc-shaped. The optical brightness enhancement film of the invention has the anti-scratching performance and interference reduction performance, and also, high brightness and a wide viewing angle are provided.

The invention provides an environment-friendly trivalent chromium electroplating solution and an environment-friendly trivalent chromium electroplating method, and belongs to the technical field of electroplating. The invention provides an environment-friendly trivalent chromium electroplating solution by adding ferric sulfate and cobaltous sulfate in the electroplating solution in order to solve the problems of poor corrosion resistance of the deposit plating layer and low covering capacity of the plating solution in the conventional trivalent chromium electroplating process. The electroplating solution has the advantages of strong corrosion resistance and good covering capacity, etc. The electroplating solution can be widely used in the electroplating field.

A method for establishing radiofrequency links via a telecommunication satellite having several spots, designated a multispot satellite, between at least one terrestrial station and a service area composed of a plurality of elementary covering zones, designated cells, each cell comprising a plurality of terrestrial terminals is disclosed. This type of satellite allows the use of several spots of antennae on board the satellite to cover contiguous geographical zones or cells, instead of a single broad spot. Each cell is associated with a spot to which a frequency band is attributed. In the case of the loss of a spot associated with a cell, designated a faulty cell, the spot (FR1, FR2, FB1, FB2, FV1, FV2) associated with at least one contiguous cell (CR1, CR2, CB1, CB2, CV1, CV2) to the said faulty cell is likewise associated with a part of the said faulty cell so that the area (CPJ′) of said faulty cell is reduced.

The invention provides a high-power covering method and a covering device of a TDD mobile communication system. The high-power covering device comprises a donor end circulator, a downlink high power amplifier and an uplink low noise amplifier. The downlink high power amplifier is connected with a signal emission device, and the uplink low noise amplifier is connected with a signal receiving device. The uplink low noise amplifier and the downlink high power amplifier are respectively connected with the donor end circulator which is connected with a TDD base station. The high-power covering method and the covering device of the TDD mobile communication system promote covering effect and reduce real estate coordination difficulty, and the covering device has good market application prospect.

The invention discloses a data transmission method and a data transmission system. The data transmission system comprises a macro base station, an indoor base station, a repeater, a first gateway for managing the macro base station, and a second gateway for managing the indoor base station, wherein, the indoor base station is electrically connected with the repeater for realizing data interaction with the repeater and a terminal belonging to the indoor base station; the repeater is used for realizing data interaction with the macro base station; the macro base station is used for realizing data interaction with the first gateway; and the second gateway is used for realizing data interaction with the first gateway. The data transmission method and the data transmission system of the invention can effectively improve the indoor network covering effect, enhance the service quality and provide convenience for application of a user.

An improved process for forming an electrolytic capacitor is provided. The process comprises: providing an anode with an anode wire extending from the anode body; forming a dielectric on the anode to form an anodized anode; applying a first slurry wherein the first slurry comprises conducting polymer and polyanion, wherein the polyanion and conducting polymer are in a first weight ratio thereby forming a first slurry layer; and applying a second slurry on the first slurry layer wherein the second slurry comprises the conducting polymer and said polyanion and wherein the polyanion and the conducting polymer are in a second weight ratio wherein the second weight ratio is lower than the first weight ratio.

The invention discloses a novel adhesive and a preparation method thereof, and relates to the field of building materials. The adhesive is characterized by comprising a dye. The preparation method comprises the following steps of: adding 0.1 to 0.8 weight percent of iron oxide red during primary gluing, and adding 1 to 2 weight percent of iron oxide red and 0.5 to 1.5 weight percent of iron oxide yellow during secondary gluing. The adhesive added with the dye has a bright color and a covering effect, and the gluing amount and the uniformity degree are easily observed to be timely adjusted.

A stabilizer for electroplating brightening tin and tin alloy comprises, by weight, 100-120 parts of sodium hypophosphite, 20-30 parts of ascorbic acid, 30-40 parts of polyethylene glycol and 10-15 parts of sulfanilic acid. The molecular weight M of the polyethylene glycol is 6000-12000. A preparation method of the stabilizer for electroplating brightening tin and tin alloy includes the following steps that (a) polyethylene glycol is weighed, distilled water is added to the polyethylene glycol to form a polyethylene glycol solution with the concentration of 5-8%, and heating and stirring are conducted until the polyethylene glycol is completely dissolved; (b) sodium hypophosphite is added and stirred until the sodium hypophosphite is completely dissolved; (c) ascorbic acid is added into the solution and stirred until the ascorbic acid is completely dissolved; (d) sulfanilic acid is added into the solution and stirred until the sulfanilic acid is completely dissolved; and (e) distilled water is supplemented and added to enable the concentration of the polyethylene glycol to be 3-4%, and the operation is competed after uniform stirring. The stabilizer for electroplating brightening tin and tin alloy has the advantages of being high in corrosion resistance, good in covering capacity, good in stability, high in electroplating efficiency and capable of being stored for a long time. A tin plating solution is stable. A clad layer obtained through electroplating is uniform, compact and good in combination force.

The invention relates to a method and apparatus to adjust transmission of a closed subscriber group node for improving radio coverage when the signal power received from the strongest co-channel open-access cell e.g. macro cell and the handover rate in the node does not fulfil set conditions.

The invention relates to a pigment printing binding agent, in particular to a preparation method of a waterborne polyurethane acrylate printing binding agent. The preparation method comprises the following steps: 1), adding first monomer composition to deionized water, adding 1,4-butanediol, 2,2-bis(hydroxymethyl)propionic acid and dibutyltin dilaurate for reaction to obtain a polyurethane prepolymer; 2), adding hydroxyethyl methacrylate to the polyurethane prepolymer to obtain double bond terminated polyurethane; 3), adding second monomer composition to N,N-dimethylacetamide to obtain an emulsifier; 4), adding the emulsifier and glycidyl methacrylate to waterborne polyurethane to obtain waterborne polyurethane acrylate emulsion; 5), coating the emulsion with silicon dioxide particles. Thebinding agent has good flexibility, and binding strength between layers is larger; moreover, a rough surface is formed by fluorine-containing acrylate and the silicon dioxide particles, and the binding agent has better hydrophobic performance.

The present invention discloses a bow-shaped three-section damping dislocation centrifugal washing device based on rotary drum oxygen bleaching. The bow-shaped three-section damping dislocation centrifugal washing device structurally comprises a pressing buckle top block, a bow-shaped shaft circular truncated cone groove, a buckle strip block, a centrifugation oxygen bleaching cylinder, a pipe connection cylinder block, a cooling plate and a base seat machine box. The bow-shaped three-section damping dislocation centrifugal washing device realizes matching of bow-shaped rotating shaft rotationformation with three-layer damping disk linkage of a corrugated bottom disk, an arc cushion separation disk and a frame strip diversion disk, forms a three-section type damping dislocation rotating effect, enables a centrifugal force to be subjected to a damping reverse force to form alleviation of single-side stress on biological test tubes and integral equal division stress of a shock solution,and ensures large vibration amplitude of peripheral axial moving test tubes, besides, through a traction effect of a rotary drum at a top part, when a frame plate rotates, oxygen is filled through balloon gas disk racks to form gas circuit rinsing, effects of high-level oxygen bleaching and axis center fine adjustment preparation are formed for biological centrifugal washing, high efficiency of operation of a machine rack is ensured, and the bow-shaped three-section damping dislocation centrifugal washing device also improves an annular wind wall covering effect of the rotary drum oxygen bleaching.

A main body of an apparatus for delivering shielding gas during wire bonding of an electronic device has a through-hole in the main body which is sized for allowing a capillary tip of a bonding tool to be insertable through the main body when performing wire bonding. At least one gas outlet located on a bottom surface of the main body adjacent to the through-hole is operative to direct an inert gas in a direction towards the electronic device. At least one gas inlet in the main body is operative to supply the inert gas to the through-hole and to the gas outlet.

The present invention provides an exception handling method and an exception handling method for process control. The method for exception handling comprises accessing an exception type for an exception, filtering historical data based on at least one defined criterion to provide a data train comprising data sets, assigning a weight to each data set, and providing a current control parameter. The data sets each comprise a historical condition and a historical control parameter, and the weight assigned to each data set is based on each historical condition. The current control parameter is provided using the weight and the historical control parameter for each data set. Accorrding to the invention, the maintaining load of a known processing programe is reduced, and the computing time of a known processing program for determining the control parameter is also reduced.

A connection structure of a semiconductor device is provided in the present invention. The connection structure includes an interlayer dielectric, a top metal structure, and a passivation layer. The interlayer dielectric is disposed on a substrate. The top metal structure is disposed on the interlayer dielectric. The top metal structure includes a bottom portion and a top portion disposed on the bottom portion. The bottom portion includes a first sidewall, and the top portion includes a second sidewall. A slope of the first sidewall is larger than a slope of the second sidewall. The passivation layer is conformally disposed on the second sidewall, the first sidewall, and a top surface of the interlayer dielectric.

The invention discloses a method and device for calculating gain in a digital relay device. The power of a downlink channel is taken as the reference by a control unit in the digital relay device. Theamplifying gain of a wireless digital amplifier on a downlink signal is firstly obtained according to downlink coverage requirements to be taken as the reference of a target coverage; aiming at a digital relay device with a common channel modulation capability, the intensity of a pilot signal can be taken as the reference, and aiming at a digital relay device without a modulation capability, theintensity of a downlink receiving signal is taken as the reference. According to the method, the problem of power control under different coverage scenarios can be solved through the self-adaptive gain configuration of uplink and downlink channels in a digital relay device, the problems of single passing, call dropping, frequent switching and out of service area of a user when the user is paged caused by excessive low uplink and downlink power of the digital relay device are prevented, and the interference problem caused by excessive high uplink and downlink power of the digital relay device is also prevented.

The invention provides a high-wear-resistance and air-permeable sports sock. The high-wear-resistance and air-permeable sports sock is used for avoiding influence on moisture absorption and sweet releasing while improving the wear resistance of the sports socks, comprises a sock body and further comprises a thickening layer, wherein the sock body comprises a sock mouth, a sock cylinder, a sock heel, a sock surface, a sock bottom and a sock head; the thickening layer is compounded on the outer side of the sock bottom; a moisture absorbing ball is arranged between the sock bottom and the thickening layer; an air-permeable layer is formed between the sock bottom and the thickening layer; air-permeable holes are formed in the sock surface; the sock body takes cotton, heating fiber and high-wear-resistance polyurethane yarns as main raw materials.

The invention relates to a light-emitting module which comprises a light guide plate, a plurality of first light-emitting components and at least one second light-emitting component, wherein the light guide plate comprises a side edge, a plurality of first incident faces and at least one second incident face, the first incident faces, together with the at least one second incident face, are arranged at intervals along the extension direction of the side edge, and the first incident faces and the at least one second incident face are separated by a virtual phantom line; the plurality of first light-emitting components emit light towards the first incident faces respectively; the at least one second light-emitting component emits light towards the at least one second incident face; the main light emitting axes of the first light-emitting components are respectively staggered with the main light emitting axis of one of the at least one second light-emitting component, and the size of the inclined angle between the main light emitting axis of each first light-emitting component and the virtual phantom line is in inverse proportion to the distance from each first light-emitting component and the virtual phantom line; thus the utilization rate of light in the light guide plate is increased.

The invention provides an efficient and energy-saving air source heat pump. The efficient and energy-saving air source heat pump comprises a refrigerant compression device, an integrated heat supply unit and an energy-saving module, wherein the outlet of the refrigerant compression device communicates with the inlet of the integrated heat supply unit; the energy-saving module comprises a first energy-saving module and a second energy-saving module arranged in parallel; the first energy-saving module comprises a first heat exchanger and a first control module which are arranged in series; the outlet of the first heat exchanger communicates with the inlet of the refrigerant compression device; the inlet of the first heat exchanger communicates with the outlet of the integrated heat supply unit through the first control module; the second energy-saving module comprises a second heat exchanger and a second control module which are arranged in series; the outlet of the second heat exchangercommunicates with the inlet of the refrigerant compression device; the inlet of the second heat exchanger communicates with the outlet of the integrated heat supply unit through the second control module; and the first control module and the second control module are configured to control the first heat exchanger and the second heat exchanger to alternatively perform defrosting. The efficient andenergy-saving air source heat pump can avoid the stop of system heating and the high-pressure risk of the refrigerant compression device.

The invention provides autumn and winter socks with high wear resistance and skid resistance. Each sock comprises a sock body, wherein the sock body comprises a sock welt, a sock leg, a sock heel, a sock upper, a sock bottom and a sock toe, the sock upper is provided with a plurality of upper anti-skidding knots and a plurality of upper wear-resistant ropes, the upper anti-skidding knots are formed on the inner side of the sock upper, and the upper wear-resistant ropes are interwoven on the sock upper and pass through the upper anti-skidding knots; the sock bottom is provided with a pluralityof lower anti-skidding knots and a plurality of lower wear-resistant ropes, the lower anti-skidding knots are formed at the inner side of the sock bottom, and the lower wear-resistant ropes are interwoven on the sock bottom and pass through the lower anti-skidding knots; a plurality of elastic ropes are further interwoven on the sock upper and the sock bottom, and the elastic ropes are connected with the upper wear-resistant ropes and the lower wear-resistant ropes.

Apparatus, methods, and computer-readable media for cooperative relay in sidelink networks are disclosed herein. An example method for wireless communication at a first user equipment (UE) includes receiving, from a second UE, a groupcast signal comprising a resource allocation assigned to a plurality of sidelink UEs including the first UE. The example method also includes communicating, with a remote apparatus on a first resource included in the resource allocation, a first relay signal comprising at least a portion of the groupcast signal, in which the first relay signal corresponds to at least a portion of a second relay signal communicated with the remote apparatus on a second resource included in the resource allocation by at least one other sidelink UE of the plurality of sidelink UEs.

The invention provides a low-slump water reducing agent and a preparation method thereof. The water reducing agent is mainly prepared from 24.5 to 28.1 parts of alcohol ether, 300.8 to 308.9 parts of a cyclic monomer, 0.5 to 1.6 parts of a catalyst, 55.4 to 56.9 parts of an acid substance, 2.5 to 5.8 parts of a reducing agent, 3.5 to 5.7 parts of an initiator, 4.8 to 8.3 parts of a neutralizing agent, 1.2 to 3.3 parts of a chain transfer agent and the balance of deionized water. The preparation method comprises the following steps: firstly preparing a polyether monomer, designing the acid-ether ratio of the water reducer according to the molecular weight of the prepared polyether, and introducing a polar functional group with strong adsorbability into polycarboxylic acid molecules through a free radical polymerization method by utilizing the advantage of strong designability of the molecular structure of the polycarboxylic acid, thereby ensuring the excellent adsorption and dispersion performance of the water reducer; and synthesizing the excellent low-slump water reducing agent.

The invention belongs to the technical field of manual tools, and particularly relates to a precise fitting wrench. The precise fitting wrench comprises a grip, a mounting ring, an adjusting nut and an adjusting mechanism, wherein the upper end of the grip is fixedly connected with the mounting ring; the adjusting nut is rotationally mounted in the right end wall of the mounting ring, and the adjusting mechanism is arranged in the middle of the mounting ring; the adjusting mechanism comprises gear rings, an adjusting plate, a mounting plate, a mounting groove, a sliding plate, a clamping block, a clamping groove, an extrusion rod and a suction cup; the outer surfaces of the gear rings are rotationally connected with the adjusting nut through threads, and the two gear rings are symmetrically and rotationally connected to the outer surfaces of the front side and the rear side of the mounting ring correspondingly; when a rubber pipe begins to expand, a wrapping plate is pushed to enable the inner surface of the wrapping plate to be attached to the upper side surface and the lower side surface of the adjusting plate, so that the friction force between the inner surface of the wrapping plate and the outer surface of the adjusting plate is greatly increased, the structural strength of the wrench is greatly enhanced when the wrench is used for screwing a bolt or a nut, and the durability of the wrench is improved.

The invention belongs to the technical field of the public security, and discloses a system and method for receiving DAB emergency information through an asynchronous LED screen. A USB switch chip isused for selecting whether the LED screen display content is from an external U disk or a virtual U disk produced by a DAB receiving module; under a normal condition, the DAB receiving module is run at a background, the content displayed by the LED screen is acquired from the external U disk; once the DAB receiving module receives emergency information, the USB switch chip is triggered to forcedlyselect that the LED display content is from the DAB receiving module. In order to be compatible with the existing driving board of the asynchronous LED screen, the DAB receiving module uses the virtual U disk technology, the received emergency information is converted in to a virtual USB magnetic disk, the magnetic disk is identified by the LED driving board so as to display the emergency information on the LED screen. Through the method disclosed by the invention, the DAB emergency information can be timely and accurately published to the existing asynchronous LED screen, and the original function of the LED screen cannot be affected.