98results about How to "Guaranteed reception performance" patented technology

The invention discloses a method for feeding back a downlink receiving state, which comprises that: a wireless resource control RRC signaling which is sent to a terminal by a base station carries a control parameter, and the control parameter is used for indicating a feedback mode adopted when the terminal feeds back the downlink receiving state; and the terminal feeds back a data receiving state on a physical downlink shared channel PDSCH of a plurality of downlink subframes of the feedback mode to the base station on the same uplink subframe according to the configuration conditions of the current uplink and downlink subframes and an uplink feedback timing relation prescribed by a system and according to the feedback node. The method enables the system to feed back the downlink receiving state through the flexibly-configured proper mode, and any UE in a cell can be configured as an ACK / NACK bundling mode or an ACK / NACK multiplexing mode by the base station.

The invention discloses a resource scheduling method and device and a base station which are used for lowering the signaling overhead of downlink control channel instructions in uplink and downlink data transmission. The method comprises the following steps: when the judging result shows that the cell of a user terminal is an interference limited cell and a semi-persistent scheduling mechanism needs to be set for the user terminal, configuring semi-persistent scheduling parameters for the user terminal; when the determining result shows that the user terminal needs to adopt the semi-persistent scheduling mechanism to transmit the service data of the access service, allocating semi-persistent scheduling resources for transmitting the service data to the user terminal according to the semi-persistent scheduling parameters; and sending the resource scheduling information of the semi-persistent scheduling resources to the user terminal through the downlink control channel of the user terminal. By adopting the technical scheme of the invention, the signaling overhead of the downlink control channel instructions in data transmission is lowered, the inter-cell interference of the downlink control channel is reduced, and the receptivity of the downlink control channel and the QoS (Quality of Service) and cell spectrum efficiency of users are improved.

The invention discloses a signal transmission method, device and system. The signal transmission method comprises the step that a base station transmits a synchronization signal block according to a predetermined synchronization signal block configuration mode, wherein the synchronization signal block contains a synchronization signal, or the synchronization signal block contains a synchronizationsignal and a message signal, there is a pre-defined corresponding relation between the synchronization signal and the synchronization signal block configuration mode, and the message signal comprisesat least one of a physical broadcast channel, a paging downlink control message, a paging message, a control channel and a data channel.

The embodiment of the invention discloses a downlink transmission method and downlink transmission equipment, relating to the technical field of wireless communication, and aiming at solving the problem how to ensure the receiving performance of a physical HARQ (hybrid automatic repeat request) indicator channel (PHICH). In the invention, a base station determines transmission power needed by transmitting the PHICH to a terminal according to the downlink channel condition of the terminal after distributing transmission resource of a PUSCH (physical uplink shared channel) for the terminal; the base station determines whether the requirement of the transmission power can be met according to the current surplus power for transmitting the resources of the PHICH, if so, the PHICH transmission resource is distributed to the terminal, and after an uplink scheduling signaling transmitted by the PUSCH is transmitted to the terminal, the PHICH is transmitted to the terminal according to the PHICH transmission resource used and distributed by the transmission power, and if not, the scheduling to the current PUSCH transmission of the terminal is abandoned. By adopting the invention, the PHICH receiving performance can be ensured.

The present invention provides an ultrasound probe and an ultrasound diagnostic apparatus. The present embodiment relates to the ultrasound probe having a first ultrasound vibrator group and a second ultrasound vibrator group, comprising a plurality of matrix switches and an adder. The ultrasound probe has a mode to send ultrasound to a predetermined observation point within a subject by the first ultrasound vibrator group, and to receive ultrasound echoes reflected within the subject by the second ultrasound vibrator group. The plurality of matrix switches extract, based on the distance between the second ultrasound vibrator group and the observation point, a plurality of ultrasound echoes having substantially the same phase from a plurality of ultrasound echoes output by the second ultrasound vibrator group. The adder adds the plurality of ultrasound echoes extracted by the plurality of matrix switches for each of the matrix switches and outputs them.

The invention relates to an LTE system synchronizing method under a discontinuous receiving mode, in particular to an LTE system synchronizing method. The method comprises the step one of beginning receiving data, wherein a user terminal device begins receiving co-frequency data within preset time according to subframe positions on radio frames where paging information needing to be monitored is located; the step two of estimating time offset and frequency offset, wherein first-class pilot signals or second-class pilot signals are read from the co-frequency data according to different channel bandwidths for estimating the time offset and the frequency offset; the step three of determining the initial position for reading off-line data according to the time offset, and correcting the frequency offset of the off-line data; the step four of carrying out setting on a tuning unit according to the estimated time offset and the frequency offset, and correcting time offset and frequency offset of follow-up received data. The synchronizing scheme supports TDD / FDD LTE systems, the synchronizing time for UE each time an IDLE wakes up can be greatly shortened, the method can be used for reducing the power consumption of the UE, and stand-by time for the UE is prolonged.

The embodiment of the invention discloses a signal diversity receiving method and a diversity receiving terminal, relates to the technical field of communication and is designed for effectively reducing the working power consumption of a receiving system. The signal diversity receiving method comprises the following steps: receiving a signal and detecting a quality measurement value symbolizing the quality of the signal; comparing the quality measurement value with a preset threshold value; when the quality measurement value is larger than the preset close diversity threshold value, adopting a receiving mode with non-diversity receiving; and when the quality measurement value is smaller than the preset open diversity threshold value, adopting a receiving mode with diversity receiving. The embodiment of the invention can be used in the communication system.

The invention discloses a power adjusting device and method. The device comprises a receiving module, an obtaining module, an adjusting module and a sending module. The receiving module is used for receiving signals of a terminal device. The obtaining module is used for obtaining a signal quality index according to the signals received by the receiving module, wherein the signal quality index is used for identifying the signal quality of signals which are sent by the power adjusting device and received by the terminal device. The adjusting module is used for adjusting the emission power according to the signal quality index after the obtaining module obtains the signal quality index. The sending module is used for sending signals according to the emission power adjusted by the adjusting module. According to the above scheme, the power adjusting device is capable of dynamically adjusting the emission power according to the signal quality index of the signals received by the terminal device, the receiving performance of the terminal device is ensured, and the reliability of communication is enhanced.

This invention relates to TDS-OFDM receiver time-varying channel estimation and the balance method and system which assumes the channel varies in linearity in an OFDM block. Firstly a channel response estimation at the PN of each OFDM block is got by PN code time domain then to carry out linear interpolating in the OFDM block to get the entire channel response estimation. This invention puts forward a simplified balance method for complementing the balance matrix with ICI to carry out spreading of finite item power series, which greatly increases the receiving performance of TDS-OFDM receivers under time-varying channel and is better than the scheme of assuming the channel unchanged in an OFDM block.

The invention relates to a data processing method and a data processing device for hybrid networking. The data processing method comprises the following steps: processing an MIMO user data and a non-MIMO user data to acquire a first input data borne on a main pilot channel and a second input data borne on an auxiliary pilot channel, wherein the first input data comprises the non-MIMO user data; performing mapping processing of balanced power on the first input data and the second input data to acquire a first output data and a second output data borne on radio-frequency channels; and sending the first output data and the second output data to a forward emission channel. The method and the device map two paths of data comprising MIMO and non-MIMO user data in a base band to the radio-frequency channels to effectively ensure power balance of two radio-frequency channels by adjusting the power on the premise of ensuring the MIMO and non-MIMO user receiving performance.

The invention discloses an MCS-grade determination method and equipment. The method comprises steps that, second SINR of a PUSCH signal is calculated by the base station equipment according to first SINR obtained through SRS signal measurement at the k0 moment; the first MSC grade is determined by the base station equipment according to the second SINR; the really scheduled PRB quantity and the really-used second MCS grade are calculated by the base station equipment according to the first MCS grade and really-needed user transmission data quantity. Through the method, the MCS grade corresponding to PUSCH calling certain PRB quantity can be precisely calculated, the MCS grade of the PUSCH is made to be in matching with the real SINR of the PUSCH channel, PUSCH reception performance is effectively guaranteed, so uplink transmission efficiency of an LTE system is improved, uplink transmission efficiency of district edge users is facilitated to improve, PUSCH transmission performance of the district edge users with large path loss is guaranteed, and the uplink business rate of the edge users is facilitated to improve.

The invention relates to the field of wireless communication, specifically to the transmitting power control technology in a wireless communication system. in the transmitting power control method, user equipment uses different power compensation amount to compensate transmitting power for subframes in different subframe sets, and sends data on the subframes through the uplink transmitting power subjected to the transmitting power compensation. According to the scheme provided in the invention, the signal to noise ratio of each uplink subframe is smooth when the full duplex technology is applied, the uplink subframe reception performance is ensured, and excessively large signaling cost is not introduced.

The invention relates to an anti-interference method for the phase tracking of a digital signal receiver and a device thereof. The traditional phase tracking method can result in decision error when a narrow band interference signal is overlapped in a signal channel band. The method of the invention is that a pseudorandom sequence Ri generated by a receiver is taken as a rotation control variable; symbol scrambling is imposed on a current constellation according to the pseudorandom sequence Ri; phase identification is carried out to the constellation after the symbol scrambling and loop filtering is carried out to the output of the phase identification; the control variable after the loop filtering is used for controlling the phase shift degree and compensating the phase of the constellation. The device of the invention comprises a phase shifter, a phase identifier, a loop filter, a pseudorandom sequence generator and a symbol scrambler. The anti-interference method of the invention achieves the aim of anti-interference by the symbol scrambling to eliminate the relativity of the narrow band interference going into the band with strong time relativity. The method enhances the stability of a phase tracking loop and ensures the receiving performance of a digital receiving system.

The invention discloses a photovoltaic power rack with adjustable angle and cleaning function of a photovoltaic panel, including the base, A vertical bar is fixedly mounted on the base, A first rotating mechanism for adjusting the angle between the photovoltaic panel and the horizontal direction is fixedly arranged at the top of the photovoltaic panel, the first rotating mechanism is provided witha first rotating shaft, the first rotating shaft is fixedly connected with a lower end of a rotating rod, The upper end of the rotating lever is fixedly connected with a second rotating shaft of a second rotating mechanism for adjusting the angle between the photovoltaic plate and the vertical direction, the second rotating mechanism is fixedly provided with a photovoltaic plate fixing frame, thefirst rotating shaft and the second rotating shaft are horizontally arranged and mutually perpendicular to each other, and a cleaning mechanism is mounted on the photovoltaic plate fixing frame. Theinvention can adjust the angle of the photovoltaic panel on two rotating planes, so as to meet the requirement that the photovoltaic panel receives the sunlight to the maximum extent in different seasons and different periods of a day. In addition, the invention also has the function of cleaning the photovoltaic panel, which ensures the light receiving capacity of the photovoltaic panel and improves the photoelectric conversion rate.

The invention discloses a signal processing method and an electronic device. The method comprises steps of controlling an antenna unit to be switched between at least two radiation field types and detecting intensity of signals received by the antenna unit by use of the radiation field types; determining a target radiation field type satisfying preset conditions of intensity of the received signal based on the intensity of the received signal by use of the radiation field types; and controlling the antenna unit to lock the received signal of the target radiation field type so as to allow the intensity of the received signal to satisfy the preset conditions. In this way, signal receiving performance of an antenna in different directions can be improved.

The invention discloses a method and device for managing hybrid automatic repeat request (HARQ) cache. The method comprises the following steps of: storing received data into the HARQ cache, and / or reading the data from the HARQ cache, and / or deleting the data from the HARQ cache by taking a code block (CB) as a unit. The invention also discloses a device for managing the HARQ cache. By adopting the method and the device, rational distribution of the HARQ cache can be realized, so that the receiving performance of a receiver is guaranteed.

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

A rotating USB joint is arranged at the front end of an integrally rectangular data card and a main antenna of the data card is arranged at the rear end, and the side surface of the rear end is provided with a CMMB pull rod antenna. The working frequency of the main antenna is usually 900MHz, and the receiving frequency of CMMB (UHF waveband) is 470-798MHz. For the design, the distance between the two antennae is long to the greatest extent, thus the interference is least. For the USB design, the usability of the USB joint is strengthened, and the rotating USB joint is conveniently applied to various notebook PCs for a user. With respect to a data card of a non-rotating USB joint, the length of the data card of the rotating USB joint can be equal to the sum of the length of the USB joint and the length of the non-rotating USB joint. Corresponding to the condition of unchangeable integral length, the length of the data card is extended, which is beneficial to prolonging the foundation of the CMMB pull rod antenna, thereby enabling the CMMB pull rod antenna to be longer when extended and the performance to be better; meanwhile, a customer can not think that the data card is too long when the USB joint is inserted into a slot during the non-work.

A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one aspect of the present invention, a frame error detector detects an error from a frame of predetermined length and generates an error signal indicating whether an error has been generated. A closed-loop power controller compares a threshold with the signal-to-noise ratio (SNR) in each power control group (PCG) in a plurality of periods of the frame and generates power control information according to the comparison result. An outer-loop power controller increases the threshold in order to generate power control information that commands a power increase in response to an error signal indicating the existence of a frame error, and decreases the threshold in order to generate power control information that commands a power decrease in response to an error signal indicating the absence of a frame error. An offset controlling unit, which is connected to the outer-loop power controller, receives gating information about the gated transmission of data in a frame at a predetermined rate, and generates an offset signal, which indicates an offset corresponding to a changed gating rate if the gating rate is changed.

The invention provides a device for estimating and compensating sampling clock offset of a handset television terminal, comprising the following modules of an over-sampling interpolation filter module, an FFT / descrambling module, a continuous pilot extraction module, a sampling clock offset estimation module and a sampling clock offset control module, wherein the over-sampling interpolation filter module completes the over-sampling interpolation, filtering and desampling extraction of the input data and adjusts the sampling clock offset according to the final sampling clock offset estimation result; the FFT / descrambling module carries out FFT operation and descrambling treatment; the continuous pilot extraction module extracts continuous pilot sub-carrier data from the descrambled data; the sampling block offset estimation module completes the estimation of the sampling clock offset; and the sampling clock offset control module obtains the final sampling clock offset estimation result according to the provided estimation results and supplies the results to the over-sampling interpolation filter module. Simultaneously, the invention provides a method for estimating and compensating sampling clock offset of a handset television terminal. The device and the method can simplify the treatment and ensure receiving performance.

The invention discloses a signal transmitting and receiving method which comprises the following steps: the invention monitors the performance state of each antenna; when detecting abnormal performance state of a current working antenna transmitting and / or receiving signal, the invention, according to the abnormal condition, controls other antennas in normal performance state to replace the working antenna to transmit and / or receive signal. In addition, the invention also discloses a signal transmitting and receiving device.

The invention is a shortwave-based weather data transmitting method and system, composed of master control computer, network controller, shortwave station, transmitting aerial, receiving antenna and shortwave receiver, where RS-232 terminal of the network controller is connected with COM1 or COM2 port of the master control computer, ACC1 terminal of the network controller is connected with REM1 terminal of the shortwave station and the shortwave receiver is a shortwave single-sideband receiver. Classify the real-time collected weather information by the master control computer to generate weather forecast information data of each sea region, primarily input the information data to the network controller for grouping, convert the grouped information data to audio frequency information to send to the shortwave station, adopt shortwave single-sideband channel to transmit multiple packets in multicahnnel packet auto-transmitting mode, adopt a multichannel auto-scanning receiving mode to receive them many times, join and integrate the exact data according to packet number into a piece of complete information. It can provide accurate, in-time, reliable weather forecast information service and other business service for moving ships.

The invention discloses an improved biconical antenna for UHF waveband passive radar. The antenna comprises an upper radiation arm, a lower radiation arm and a feed structure, wherein the upper radiation arm and the lower radiation arm are symmetrically and coaxially arranged and connected into a whole, a first cylindrical vibrator and a first conical vibrator are connected to form the upper radiation arm, a second conical vibrator and a second cylindrical vibrator are connected to form the lower radiation arm, the diameter of the top surface of each conical vibrator is equal to the diameter of each cylindrical vibrator, the first conical vibrator and the second conical vibrator are symmetrically arranged in the mode that conical tips are opposite, and the first conical vibrator and the second conical vibrator are not in contact; the feed structure is composed of an SMA-K type connector and a 1:1 balun, the SMA-K type connector is arranged on the internal conical tip portion of the second conical vibrator, the balun is arranged between the first conical vibrator and the second conical vibrator, the SMA-K type connector is connected with the input end of the balun, and the output end of the balun is connected with the upper radiation arm and the lower radiation arm of the biconical antenna. According to the improved biconical antenna, directional diagram consistency is higher on the working band, the size is smaller, and the antenna is convenient to carry.

The utility model discloses an interference eliminating method for the random access to the base station, which is characterized in that: choosing candidate code in order to detect the machined received ranging code signal when the ranging code is transmitted, and eliminating the ranging signal related to the selected candidate code. The utility model has the advantages that reducing the co-frequency interference in the random access in the communication system, improving the detection performance of the base station, ensuring a high service quality of the base station, and improving the experience in using. The utility model also discloses a communicator and the related system.

The invention discloses a high-speed share control channel power controlling method, and relates to a channel power controlling method in a mobile communication system, the method aims to reduce the interference among channels and save the transmitting power of the Node B. The invention includes the steps that: (1) the power offset values of the high-speed share control channels Part1 and Part2 are respectively selected; (2) the reference powers corresponding to the high-speed share control channels Part1 and Part2 are determined; (3) the power offset values of the high-speed share control channels Part1 and Part2 and the reference powers corresponding to the Part1 and the Part2 are respectively added up, so as to get the transmitting powers of the high-speed share control channels Part1 and Part2. The invention can improve the detection performance of an HS-SCCH signal, and can reduce the mutual interferences among the channels and save the transmitting power of the Node B on the premise of ensuring the receiving performance.

An integrated optical transmitting-receiving assembly provided by the present invention comprises an optical chip, an optical transmitting device, an optical coupling device, an optical receiving device and an optical waveguide layer, wherein an isolating groove is arranged on the surface of the optical chip and extends from one side of the optical chip to the other side, and the optical chip is divided into a receiver area and an emitter area which are independent mutually and spatially; the optical transmitting device and the optical coupling device grow epitaxially on the surface of the emitter area, and the optical receiving device grows epitaxially on the surface of an optical reception area; the optical transmitting device, the optical receiving device and the optical coupling device are located in the same layer of the surface of the optical chip, and the optical coupling device is connected with the optical transmitting device and the optical receiving device mutually and separately via the optical waveguide layer.

The invention discloses a method and device for retransmitting an uplink data stream. The method comprises the steps that UE receives an HARQ acknowledging character which is fed back by a base station and comprises the situation of whether data stream transmission is correct or not when the data stream is transmitted before by the UE; when the UE determines the situation that data stream retransmission needs conducting according to the HARQ acknowledging character, transmission conditions in the retransmitting process are acquired when data stream retransmission is conducted in a next-time HARQ circular time; the UE transmits the uplink data stream to the base station according to the transmission conditions, and carries the indications of whether the data stream carried by a data channel corresponding to a control channel are intersected or not according to an auxiliary E-DPCCH. According to the method and device for retransmitting the uplink data stream, when the UE conducts uplink data stream retransmission, a proper transmission mode and a data channel for carrying the retransmission data stream can be selected according to the transmission conditions in the retransmission process so as to ensure that the base station is informed of the carrying situation of data stream retransmission, and accordingly the UE can adapt with the current transmission conditions of a system, and the retransmission performance of the system can be improved.

The invention discloses a multifunctional signal receiving antenna mounting base. The multifunctional signal receiving antenna mounting base is characterized by comprising a base (1), a rotary plate (2), a balance apparatus, a mounting plate (4) and a heat dissipation apparatus. The multifunctional signal receiving antenna mounting base is simple in structure and high in practicability; by virtueof setting of the rotary plate which can rotate for 360 degrees, a telescopic rod capable of adjusting fixation of a signal receiving antenna, and the movable mounting plate capable of adjusting the inclined angle of the signal receiving antenna, the signal receiving antenna can realize better signal receiving; and meanwhile, by virtue of the heat dissipation apparatus, the temperature of the signal receiving antenna can be controlled to be 35 DEG C or less, so that the receiving effect of the signal receiving antenna can be ensured.

The invention discloses a foreign labor general management system. The foreign labor general management system comprises a preliminary collection module, an expertise theory testing module, a work experience evaluation module, a social experience investigation module, a preliminary screening evaluation module, a mentor scoring module, a comprehensive evaluation screening module a senior explanation module, a senior guiding module, an intention confirmation module and a target arrangement output module. The foreign labor general management system can guarantee an object dispatched for foreign affairs has a good acceptance capability for a new environment and improves quality and professional skills of exported labors.