69results about How to "Guaranteed transmit power" patented technology

The invention provides a power distribution method considering delay limitation in a millimeter wave (mmWave) uplink communication system assisted by an intelligent reflection surface (IRS). Accordingto the method, the power distribution problem is converted into three optimization steps through an alternating optimization (AO) thought by taking optimization of user power as a target and maximumdelay of a user as a constraint, and the method specifically comprises the steps of(1) fixing a multi-user detection matrix and an IRS passive beamforming variable, and obtaining an optimized power closed-form solution according to a transmission delay constraint; (2) fixing power and passive beamforming variables, and optimizing a multi-user detection matrix to eliminate inter-user interference;and (3) fixing power and a user detection matrix, and proposing a complex circulation waveform optimization (CCMO) algorithm for optimization of IRS beam forming. According to the invention, retransmission time delay caused by channel blocking can be effectively resisted in a low-cost and low-power-consumption mode by utilizing an almost passive IRS auxiliary link, and the proposed algorithm is suitable for being expanded to the problem of large-scale IRS auxiliary power distribution.

This invention discloses a method for controlling power of a UE, which pre-sets a monitor period and a RNC receives the UE communication data from the base station and determines the retransmission times of the UE data, when the period is full, the RNC gets the overrun times of the retransmission of the UE communication data in the period based on the retransmission times and the threshold value set before hand to decide the communication data volume should be received by the UE in the period to compute the target value of a new SIR to control the UE to adjust the emission power based on the target value.

Disclosed in the present invention is a beam forming method for an uplink MIMO-NOMA wireless communication system, and the method is suitable for uplink beam forming of multi-cell multi-user MIMO-NOMAwireless communication system. The method comprises the following steps: applying Lagrangian dual conversion and secondary conversion to maximize the total rate of the system to obtain an expressionof a Lagrangian auxiliary factor and a secondary conversion auxiliary vector; for the converted convex optimization problem, applying a Lagrangian multiplier method to obtain an expression of a beam forming vector; and with the maximum total system rate as a target, applying iterative operation to obtain a beam forming vector of each user. Compared with a traditional uplink power distribution method, the method has the advantages that the good total system rate can be obtained, and the system performance of the NOMA is superior to that of an orthogonal multiple access system.

The invention discloses an allocation method for an upstream discontinuous resource block (RB). The method comprises the steps of determining the allocation of a discontinuous RB in an assigned channel bandwidth, and then judging whether the ratio of the RB value required to be used for the channel bandwidth and the maximum RB value capable of being used for the channel bandwidth is less than a preset value, if so, performing the allocation of the discontinuous RB according to the allocation constraint strategy of the upstream discontinuous RB. The invention also discloses an allocation device for an upstream discontinuous resource block (RB). With the adoption of the allocation method and the allocation device for the upstream discontinuous resource block, the maximum transmitting power return (MPR) due to resource allocation is effectively reduced, thereby ensuring the transmitting power of user equipment (UE) and further guaranteeing the quality of the signal sent by the UE.

The invention provides a transmitting power adjustment method based on group user terminals and a base station. The method comprises the following steps: after a downlink radio link failure message sent by a first group user terminal of a first group is received, first transmitting power which is currently corresponding to the first group is increased to obtain second transmitting power, and the second transmitting power remains unchanged within a specified time; the number of group user terminals in the first group which send downlink radio link failure messages within the specified time is counted, and power adjustment proportion is obtained according to the counted number and the total number of the group user terminal in the first group; and the second transmitting power is adjusted according to the power adjustment proportion. By the technical scheme, downlink communication quality of the group user terminals is guaranteed by appropriate adjustment of the transmitting power, and waste of resources which is caused by frequent reconfiguration of resources is minimized.

The invention discloses a device and a method for realizing transient electromagnetic focusing detection of a mine, wherein the device and the method belong to the field of geophysical electromagnetic exploration technology. The invention aims to supply the device and the method which realize focusing detection and improve exploration depth and precision by means of a magnetic field superposing principle. The device and the method are characterized in that two multi-turn coils which are in the same plane and are totally same form a transmitting device; the transmitting device is connected with a transient electromagnetic explosion-proof host machine in parallel; a certain distance exists between the two coils and furthermore the distance can be properly adjusted according to an actual detection space; the current with same amplitude and same direction is applied to the two transmitting coils; and an induction electromagnetic wave signal is received at symmetrical position relative to a line between centers of the two coils as an axis by means of a receiving device. The device and the method have advantages of focusing an underground eddy current electromagnetic field to a detection area, increasing an exploration depth and realizing targeted detection. Furthermore the detection effect of the method and the device is remarkably improved than that of a traditional mine transient electromagnetic transceiver device.

The invention discloses a spectrum control method for a pulse modulation waveform of a full-solid-state emitter. The method is characterized by comprising the following steps that: 1, a PIN switch modulator is added at the input end of the emitter, the excitation input signal of the emitter shaped in advance, and a rising edge and a falling edge of an original steep excitation pulse signal are enlarged; 2, the modulation pulse width of the PIN switch modulator is equal to the emission output pulse width, the pulse width of the excitation signal is greater than the modulation pulse width of a PIN switch, and a set time relation is kept between the modulation pulse of the PIN switch modulation and the excitation signal; and 3, a leakage stage modulation technology is adopted and strict pulse time sequence control is performed at the first stage of the radio frequency amplification chain of the emitter. By the spectrum control method, the out-of-band spectrum distribution of an emission signal is greatly reduced, so that a spectrum of an emission waveform can meet an index requirement.

The embodiment of the invention discloses a temperature control method and device as well as a terminal. The method comprises the following steps: when detecting that the temperature exceeds the set threshold temperature, detecting channel quality parameters of an uplink traffic channel in a set time period, and adjusting the maximum transmit power rollback value in the next set time period according to the channel quality parameters; and adjusting the uplink transmit power based on the adjusted maximum transmit power rollback value in the next set time period. According to the method, device and the terminal disclosed by the embodiment of the invention, the maximum transmit power rollback value of a power amplifier can be adjusted according to the detected channel quality parameters, and thus when a transmitter performs power adjustment based on the current maximum transmit power rollback value, the transmit power of wireless signals can be ensured, and the power amplifier, a radio frequency module and other components with a relatively high heating level can also maintain a relatively low temperature, and thereby, the temperature control can be achieved, the transmit power of the wireless signals can also be ensured, the service interruption caused by link disconnection cannot occur, and the communication performance of wireless services can be ensured.

The invention discloses an air repeater for an LTE base station. The air repeater comprises a forwarding unit, a radio frequency front end and a transmitting/receiving antenna. Signals are forwarded after distortion-free spectrum shifting and amplification in air, and then the received spectra are restored on the ground to realize forwarding of the LTE signals. Moreover, the system has the advantages of low cost, simple erection, strong maintainability, low power consumption, high reliability and the like, and the air forwarding unit is flexible in erection position, thereby solving the problem that the erection cost of the base station in blind area coverage as well as some remote regions and regions with few users is too high; a variable gain amplifier with a large dynamic range is integrated inside to achieve long-distance and near-distance coverage; the transmitting and receiving time slots are automatically switched, the switching time can be ignored, and data loss caused by the switching delay will not occur; and the variable range of the frequency of each part in the system is wide, the frequency band is convenient to change for forwarding, only the filter frequency band needs to be correspondingly changed, and the expandability and the universality are strong.

The invention discloses a power control method of a multiple-antenna system, and a user terminal, which can realize obtaining of Delta TF (Delta Transmission Format) parameters under an uplink dicode word flow of UE (user equipment). Through the Delta TF parameters, eNB (evolved Node B) can control the uplink PSD (Power Spectral Density) of the UE only by controlling the MCS (Modulation and Coding Scheme) of an uplink code word flow of the UE. The method provided by the invention has the advantage that the eNB can control the PSD of the UE more flexibly and effectively, so that the purposes of lowering system interference, ensuring transmission power of the UE and increasing system throughput can be achieved.

The invention discloses a wireless electric energy transmission adjustment method based on a tramcar parking offset error. The method comprises the following steps of A, setting the parking precision of a tramcar, and analyzing a distribution rule of errors between tramcar parking positions and target positions; B, integrating efficiency and probability density at different parking positions, and designing an optimized coil through using an integral efficiency expectation as an optimizing target on the condition of a parking offset normal distribution rule; and C, performing optimization designing on the dimension of the coil. According to the method, in designing a coupling coil of a tramcar wireless charging system, according to a parking offset error distribution characteristic, the efficiency expectation is used as the optimizing target; through optimization searching designing on the length and width of the coil and an original-side coil prolonging design, an expected efficiency value is realized on the condition that an offset of a coil which is fixed to the tramcar and ground occurs, thereby ensuring efficiency and transmission power of a wireless charging system and realizing long-term optimal efficiency of the system.

Embodiments of the invention provide a spin biosensor and a terahertz time domain spectroscopy system. The spin biosensor comprises a substrate, a metamaterial array layer and a ferromagnetic structure layer, wherein the metamaterial array layer and the ferromagnetic structure layer are located on both sides of the substrate, or the metamaterial array layer and the ferromagnetic structure layer are located on the same side of the substrate, a passivation layer is further disposed between the metamaterial array layer and the ferromagnetic structure layer, and the metamaterial array layer is located at the outermost layer. The use of ferromagnetic materials as the generating device greatly reduces the cost while ensuring the transmission power. The metamaterial is directly fabricated on thesurface of the device, and the detector member is closely attached to the emitting source, thereby eliminating the complicated optical path design and realizing the integration of the terahertz biosensor.

The invention discloses a cooperative control method for the transmitting power of H2H and M2M terminals in a mobile network, and is applicable to the technical field of wireless communication. The mobile network is composed of a base station, an H2H terminal and K M2M terminals, and in combination with the transmitting power cooperative control method, the data throughputs and transmitting power of the H2H and M2M terminals are respectively solved. According to the cooperative control method, while the data throughputs of the H2H and M2M terminals are ensured, the transmitting power of the M2M terminals is minimal, namely the data transmission requirements are met, and the transmission energy consumption of the M2M terminals is reduced.

The invention provides a planar wireless charging transmitter based on a repeating coil. The transmitter comprises an inverter circuit, the inverter circuit is used for converting a direct-current power supply into a high-frequency alternating current and then accessing the high-frequency alternating current into a source coil and a source coil compensation network, and is characterized by further comprising the source coil, the source coil compensation network, the repeating coil and a repeating coil compensation network. The source coil compensation network and the relay coil compensation network are respectively used for eliminating reactive power caused by the source coil and self-inductance. According to the scheme based on the planar wireless charging transmitter, the relay coil capable of being put in/cut out is adopted, and when the center position of a receiver is aligned with the center position of the source coil or the offset is small, the relay coil is cut out; on the contrary, when the offset is large, the relay coil is put into use. Experimental results show that the transmission power and efficiency of the full charging area of the transmitter can be ensured, and the problems of charging offset tolerance performance, user experience, economic cost and the like are considered at the same time.

The present invention provides an inductive wireless electric energy transmission system and a multi-adjustment parameter control method. Based on the design of a transmitting end portion and a receiving end portion in the inductive wireless electric energy transmission system and the combination of mutual cooperation of the transmitting end portion and the receiving end portion and five power adjustment parameters, a vehicle power battery constant current and constant voltage charge function is commonly completed to achieve optimal control of the transmission power and the transmission efficiency of the system; the inductive wireless electric energy transmission system can achieve four working modes to allow the coils of the transmitting end portion and the receiving end portion to be better paired, the two coil structures have good compatibility and interoperability. Besides, a three-phase bridge inverter module of the transmitting end and a three-phase bridge rectifier module of thereceiving end employ a three-phase bridge structure instead of a traditional H-bridge structure, so that when one of the inverter bridge and the rectifier bridge in the system has faults, the systemstill performs power transmission and has good fault tolerance through corresponding control.

The invention relates to an antenna with high isolation and low cross polarization level, a base station and a terminal. The antenna comprises at least one radiation layer, a feed layer and an aperture coupling layer arranged between the radiation layer and the feed layer, and the aperture coupling layer comprises a metal sheet. The metal sheet is provided with a first feed gap, a second feed gap and a middle gap, and the middle gap is located between the first feed gap and the second feed gap and located in a weak electric field area of the metal sheet. By arranging the middle gap between the first feed gap and the second feed gap of the metal sheet, the boundary condition of the antenna can be changed under the condition that the radiation electric field of the antenna is not changed due to the existence of the middle gap, so that on one hand, the current in the cross polarization direction generated on the antenna is weakened, and the cross polarization level is reduced; and on the other hand, the energy coupling phenomenon of the antenna is effectively weakened, so that the isolation of the antenna is remarkably improved.

The invention relates to oil producing wastewater treatment system for oil exploration. The system comprises a remote monitoring terminal and a wastewater treatment mechanism wirelessly connected with the remote monitoring terminal, wherein the wastewater treatment mechanism comprises a cooling tower, a reaction assembly, a treatment assembly and a recycling assembly, and the cooling tower is communicated with the treatment assembly and the recycling assembly through the reaction assembly. According to the oil producing wastewater treatment system for the oil exploration, process combination is formed by the aid of a hydrolysis acidification pool and a contact oxidation pool, the treatment cost can be reduced, the treatment efficiency can be improved, so that the efficiency of the wastewater treatment system is improved, meanwhile, wastewater is subjected to sufficient oil separation treatment by a partition board and a shunt pipe in an oil separation pool, and reliability of the wastewater treatment is improved accordingly; moreover, signals are amplified three time by an amplifying circuit taking a first triode, a second triode and a third triode as main components in a frequency changer circuit respectively, thus, transmitting power of the wireless signals is guaranteed, and working reliability of the system is improved.

The invention discloses a vector network system for testing power transmission line passive interference. According to the system, a transmitting circuit is connected with a vector network analyzer sothat the vector network analyzer and a receiving circuit can be connected; the transmitting circuit comprises a transmitting antenna, an amplifier, a first port photoelectric conversion module, a first port connection optical fiber and a first port electro-optical conversion module which are connected in turn; the amplifier and the first port photoelectric conversion module are arranged in a first shielding box; the first port electro-optical conversion module inputs signals to the vector network analyzer; the receiving circuit comprises a receiving antenna, a second port photoelectric conversion module, a second port connection optical fiber and a second port electro-optical conversion module which are connected in turn; the second port photoelectric conversion module is arranged in a second shielding box; and the second port electro-optical conversion module receives the output signals of the vector network analyzer.

This invention discloses a method and a system for controlling soft switch link power in the CDMA network, which monitors emission power of the down code domain of all soft switch branches and up received S/N ratio of a UE terminal to get the down code domain emission power of the branch with the strongest S/N ratio and takes it as the reference to close the down emission of the soft switch branches with greater emission power but do not play an important part and maintains the up-reception of them to ensure the performance. If an optimum area where the branch with the greatest S/N ratio places changes and its down emission is closed, then the emission of the changed optimum area is started and the initial down domain emission power of the branch is taken as the reference value.

The bearing comprises an outer assembling ring, a supporting ring and a sealing cover, two sets of vertically-arranged embedding grooves are formed in the inner side of the outer assembling ring, embedding rings are installed on the inner sides of the two sets of embedding grooves in an embedded mode, and the sealing cover is installed on the inner sides of the two sets of embedding rings. Limiting grooves which are symmetrically distributed are formed in the opposite faces of the two sets of sealing covers, two sets of supporting rings are installed on the opposite faces of the sealing covers, positioning blocks are installed on the outer sides of the two sets of supporting rings, and the positioning blocks are installed on the inner sides of the limiting grooves in an embedded mode. The rubber ring is installed, the positioning piece on the rubber ring is embedded into the inner side of the positioning groove, the outer assembling ring positions the rubber ring on the outer side through the positioning groove, the stability of the rubber ring is guaranteed, the rubber ring is connected with an external structure in an embedded mode through the clamping groove, and the stability of the rubber ring is guaranteed through friction force of the rubber ring and positioning of the clamping groove. Normal use of transmission on the device is guaranteed, friction force of the device is increased through a rubber ring, and safety of the device is guaranteed.

The invention relates to a dynamic control method and device for a remote radio unit, and relates to the technical field of communication. The method comprises the following steps: determining the state of a base station according to the service volume information of the base station in a preset time period; wherein the state of the base station comprises an idle state and a busy state; under the condition that the base station is changed from the busy state to the idle state, determining the number of cells to be updated of the base station according to the service volume information of the base station in a preset time period; wherein the number of the cells to be updated is smaller than the number of the current cells; according to the number of the cells to be updated, changing the cell identifier of each RRU corresponding to the base station, so that the number of different cells to which each RRU belongs after changing is the same as the number of the cells to be updated; and for each changed cell, part of RRUs are selected to be closed, and the transmitting power of the remaining RRUs is improved to reach the area range corresponding to the coverage cell.

A flexible-shaft transmission all-terrain remote control mower comprises a mower frame, a chassis, driving wheels, a remote control circuit and a fuel motor, and is characterized by further comprisinga main shaft, a left driving wheel support and a right driving wheel support, wherein the left driving motor and the left driving wheel driven by the left driving motor are mounted on the left driving wheel support, the right driving motor and the right driving wheel driven by the right driving motor are mounted on the right driving wheel support, and the left driving motor and the right drivingmotor are respectively and electrically connected with the remote control circuit. The flexible-shaft transmission all-terrain remote control mower has the advantages of compact structure, good operation reliability and high working efficiency.

The invention relates to a multi-head ball screw device, comprising screw shafts and nuts of a raceway concave trough which are acted on each other and rolling balls which are supported between the screw shafts and the nuts. The multi-head ball screw device is characterized in that the raceway concave trough is formed by the combination of spiral troughs with two heads or more than two heads. The multi-head ball screw device has the beneficial effects that the multi-head ball screw device are formed by the combination of multi-head spiral troughs, thus increasing the helix angle on the premise that the transmission power is ensured, improving the displacement speed of the transmission, and meeting the transmission occasion where low rotation speed and large displacement quantity are required.