75results about How to "Extend signal coverage" patented technology

A method for routing a robotic apparatus to a service station and robotic apparatus service system using thereof are disclosed in the present invention, wherein the system comprises at least one service station and a robotic apparatus. The service station is capable of providing charging service and has a signal emitter array which functions to emit communication signals for guiding the robotic apparatus back to the service station. The robotic apparatus has a signal receiver for searching and detecting the communication signal emitted from the service station and determines the moving direction according to the intensity of the communication signal received by the signal receiver so as to arrive at the service station smoothly through the method disclosed in the present invention. Once the robotic apparatus arrives at the service station, the service station may provide service such as charging to the robotic apparatus while the robotic apparatus may standby to wait for the accomplishment of charging. By means of the method and system provided in the present invention, the robotic apparatus may route to the service station in a shortest way by rectilineal motion and contact to the service station to receive the service in arbitrary angle.

The present invention employs hierarchical modulation to simultaneously transmit data over different modulation layers using a carrier RF signal. Each modulation layer may be of a higher or lower order than the other modulation layers. Certain embodiments of the present invention may transmit different information on the different modulation layers. Other embodiments of the present invention may use the different layers for processing different information streams.

The invention discloses a method for realizing downstream data beam formation and a system thereof; the method comprises: a base station transmits a downstream known sequence periodically to a terminal in a pre-distributive time-frequency resource section; the terminal carries out weight value estimation and extracts the corresponding phase information according to the received known sequence; theterminal carries out quantification to the corresponding phase and feeds back the quantified feedback bit to the base station by an upstream feedback channel; the base station reconstructs a weight vector according to the received feedback bit, and beam formation is carried out to the downstream data according to the feedback channel, the base station utilizes the weight value to carry out downstream data beam formation, so as to lead the system to trace the change condition of a user timely, achieve better beam trace effect, reduce array error, improve the reliability of the system, expand signal coverage range and reduce sending power.

A wireless communication system includes a Central Station (CS) capable of the functions of a Base Station Controller (BSC), and at least one access device controlled by the CS. The CS is connected to the at least one access devices through cables. The access device is adapted to demodulate the downlink wired signals of the CS to downlink Radio Frequency (RF) signals, and send the downlink RF signals to the destination wireless user. The CS is adapted to perform baseband processing, Intermediate Frequency (IF) processing, and RF processing for the data provided by the core network to obtain downlink RF signals, modulate the downlink RF signals to downlink wired signals, and send the downlink wired signals to the access device corresponding to the destination wireless user of the data provided by the core network. A CS, a BS, and two communication methods are disclosed herein.

The invention provides a leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment. The system comprises a core network, a plurality of baseband processing units, a plurality of remote radio units and a plurality of leaky cables; the core network is connected with the baseband processing units, each processing unit is connected with the remote radio units, and every two adjacent remote radio units are connected through one leaky cable. The leaky cables are used as transmission media, LTE wireless signal coverage in the tunnel environment is performed, the system is used for realizing dual-network dual-redundancy coverage of wireless signals, an LTE uplink wireless communication link MIMO (multiple input multiple output) method is realized, signal coverage range is large, and signal coverage is uniform.

The invention discloses a full-band multichannel big-power general transmitter implementation device and method, and the device comprises a multipath selectable small-power radio frequency signal synthesis module which is used for receiving multiple signal sources from a plurality of excitation modules, synthesizing the signal sources, and outputting a small-power radio frequency signal; a multipath small-signal in-phase distribution module which is used for receiving the small-power radio frequency signal, transmitting the small-power radio frequency signal, and generating N output signals so that a big-power power amplifier module group uses the N output signals; the big-power power amplifier module group which comprises N big-power power amplifier modules, wherein each big-power power amplifier module receives one of the N output signals, carries out three-level amplification and generating a high-power radio frequency signal; and a big-power bread antenna module group which comprises N big-power bread antenna modules corresponding to the N big-power power amplifier modules in a one-to-one manner, and is used for receiving big-power radio frequency signals and transmitting the coverage. The device reduces the equipment investment, enlarges the signal coverage area, and improves the operation stability of equipment.

The invention discloses a reflective programmable metasurface for realizing wave beam scanning in ka waveband. The programmable metasurface is composed of 20 * 20 basic unit structures, and the basicunit structures are shown in figure 1. The size of the whole metasurface is small, and the miniaturization can be realized. The digital codes of the metasurface are obtained by designing different beam deflection angles, and then the state of each basic unit structure is controlled. The beam pointing at different angles is achieved. Therefore, the purpose of beam scanning is achieved. The reflective programmable metasurface is simple to manufacture, easy to integrate, low in cost and small in size, and can be directly used in a millimeter wave communication system.

The invention discloses an antenna and an antenna control method and device. In the scheme, the antenna comprises a substrate, an oscillator and three reflecting plates, wherein the oscillator is arranged on the substrate, a grounding point of each reflecting plate in the three reflecting plates is connected with a grounding end of the substrate, the three reflecting plates are separately arranged on vertexesof an equilateral triangle taking the oscillator as a gravity center, and an included angle between the reflecting surfaces ofany two reflecting plates in the three reflecting plates is an angle between 55 degrees and 65 degrees. The invention provides the antenna with a three-petal-shaped radiation pattern, the antenna has higher grain than that of an omnidirectional antenna and has better signal coverage range than that of a directional antenna, and thus, the antenna can be applicable for a multi-user multiple-input multiple-output (MU-MIMO) technology better.

The invention relates to the technical field of radio-frequency identification (RFID), in particular to a one-dimensional barcode reading and locating based tracking locking RFID fusion system and method. The system comprises a cargo channel, sensors, a barcode reader, antenna rotation apparatuses and an antenna gate, wherein the cargo channel penetrates through the antenna gate; the sensors are in communication connection with the antenna rotation apparatuses and are used for detecting the cargo channel and sending a detection result to the antenna rotation apparatuses; the antenna gate comprises a plurality of antennae; the antennae are connected with the antenna rotation apparatuses in a one-to-one correspondence manner; and the antenna rotation apparatuses are used for rotating and driving the antennae when the sensors detect that cargos exist on the cargo channel. According to the system, initial position information of the cargos is obtained through the position sensors on the channel, the moving speed of the cargos is calculated, and the rotating angular speed of each antenna is dynamically controlled, so that antenna signals can be always aligned to the cargos; and while the barcode reader reads one-dimensional code information, RFID tag information is read and bound by fusion.

The invention discloses an interactive electronic security police preparation method, system and device based on GIS. The method comprises the following steps: intelligent real-time monitoring and identifying is carried out in the location of an interactive electronic security police device by using infrared sensors, recording equipment and video equipment; when a security event occurs, an intelligent alarm module is automatically started to intervene the security event on site and issue an alarm intelligently; and the change of the threat level of the on-site behavior is continuously judged,and corresponding on-site intervention is carried out. Real-time monitoring and intelligent active intervention in the location of an electronic security police preparation device are realized. Multiple electronic security police devices in a region constitute a regional network to carry out real-time and on-site intervention and active alarm receiving, intervention and police dispatching in the monitored large region range and discover and handle security risk and emergency rescue events in time, so as to make up for the shortage of manpower and material resources in relevant departments.

The invention discloses a main/ standby electronic toll collection (ETC) track system with variable transaction scopes and a realization method thereof. The system comprises a main control computer, an automatic barrier machine, an expense display, two or more than two road side read-write devices, and a vehicles detector. According to a direction from which vehicles successively enter, the system divides a main communication area and a standby communication area on an ETC track; when the system does not complete ETC transaction with the vehicles at the main communication area, the standby communication area will be automatically started to carry out the ETC transaction with the vehicles; and when a portion of the road side read-write devices fail to work, the system will adjust power of the road side read-write device that can work normally, so that signal coverage on the vehicles can be ensured and thus a traffic flowing effect can be ensured.

The invention discloses a double-frequency omnidirectional antenna. The double-frequency omnidirectional antenna comprises a first patch, a first dielectric substrate, a second patch, a second dielectric substrate, and a grounding plate which are orderly laminated, and a metal probe connected with a feed port after orderly penetrating the first dielectric substrate, the second patch, the second dielectric substrate and the grounding plate; the clearance is retained between the metal probe and the second patch, and one end, far away from the feed port, of the metal probe is propped against thefirst patch, thereby enabling the metal probe to directly feeding on the first patch and performing the coupling feeding on the second patch, wherein the sizes of the first patch and the second patchare different. The double-frequency omnidirectional antenna has wide impedance width and axial ratio bandwidth, and has good omnidirectional radiation feature; the omnidirectional antenna disclosed bythe invention is simple in structure, low in section and especially suitable for the current wireless communication system.

The invention relates to the technical field of wireless communication, in particular to a method and device for accessing a network, so as to solve the problem in the prior art that networked devices such as smart sensors and smart appliances are not connected to a local area network including multiple terminals. The present invention provides a method for accessing a network. In the method, a gateway device broadcasts access information, and notifies the first type of subordinate user equipment to broadcast the access information; the gateway device determines the first channel quality value according to the pilot signal, and receives The second channel quality value: the gateway device determines the device connected to the target user equipment according to the first channel quality value and the second channel quality value, and performs access processing. The gateway device and the subordinate user equipment of the present invention can send access information to the networked device, and determine the channel quality with the networked device according to the pilot signal in the feedback signal, and determine the connection relationship with the networked device, and perform Access, so that networked devices can be connected to a local area network containing multiple terminals.

The invention relates to a data compression method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining to-be-compressed baseband I/Q data by a terminal,and calculating the amplitude value of the to-be-compressed baseband I/Q data; determining a multi-segment amplitude value range according to the baseband I/Q data to be compressed; compressing the amplitude value of the baseband I/Q data to be compressed according to the amplitude value range corresponding to the baseband I/Q data to be compressed to obtain a compressed amplitude value; and according to the compressed amplitude value, searching data corresponding to the compressed amplitude value in a compression table to obtain compressed data. According to the data compression method provided by the invention, the compression process is simplified, so that the signal coverage range of the baseband data transmission system is expanded.

Method and system consist of a mobile application installed on a mobile device with internet connection and a geographical positioning device; a remote hosting server configured with software and database; an onsite wireless communication hosting apparatus. The mobile application communicates with the remote hosting server and the onsite wireless communication apparatus. The remote hosting server and onsite wireless communication apparatus communicate and transfer data to one another, the remote hosting server communicates with third party databases via secured access and retrieves location related information requested by onsite users of the mobile device. Web users at anywhere may select a location displayed on a digital map over interface of a web application configured to the remote hosting server; access the same information and multimedia programs as onsite users; including data entered by location owners, received from third-party databases via secured connection, and uploaded from onsite wireless communication apparatus.

The invention discloses an intelligent mine monitoring system which is formed by a miniature collection module and an intelligent terminal. The miniature collection module comprises a central processor, a real-time clock, a WIFI module, a JTAG interface, a camera, a power source and a Flash storage chip, wherein the central processor is connected with the real-time clock, the WIFI module, the JTAG interface, the camera, the power source and the Flash storage chip respectively. A transmission method includes the steps that the camera is used for collecting information; the video information is transmitted to the intelligent terminal through the WIFI module after being processed by the miniature collection module, and the intelligent terminal displays the video information so that users can view the video information. The intelligent mine monitoring system has the advantages that the miniature collection module is high in integration level and small in size; a terminal information receiving device can be carried about and is convenient to use; workers can check working environments in real time and can timely eliminate dangers.