64 results about "Atmospheric waveguide" patented technology

The invention discloses a microwave over-the-horizon radar echo chart calculating method, which comprises the following steps: 1) determination of relevant parameters, target parameters and environment parameters of a microwave over-the-horizon radar; 2) prediction of characteristic parameters of an evaporation waveguide and measurement of characteristic parameters of a surface waveguide; 3) calculation of an atmosphere waveguide or atmosphere refraction propagation sea surface glancing angle; 4) calculation of an atmosphere waveguide or atmosphere refraction propagation factor; 5) calculation of a sea clutter and target echo power diagram; and 6) simulation of a dynamic radar echo chart. The disclosed microwave over-the-horizon radar echo chart calculating method takes influence, formed under ocean hydrological conditions, of atmospheric duct propagation on sea surface echoes and target echoes into full consideration under the actual microwave over-the-horizon radar working environment, provides an actual radar beam sea surface grazing angle calculating method under the atmospheric refraction or atmospheric duct condition on the basis of radar system parameters and marine hydrometeorological parameters, and with relevant sea clutter models being combined, can effectively predicate and estimate the sea surface echo power.

A first base station (14) in a wireless communication system (10) operating according to a synchronised time division scheme detects interference of uplink communication, determines the delay of the interference in relation to an own communication structure (CS1), detects aerial interface identifying data of the source of interference identifying a further base station and sends an indication of the further base station interfering uplink communication to the interference handling node (22). The indication is accompanied by identification data comprising aerial interface identifying data of the further base station and distance data determining the distance (D1) between the first and the further base station. The interference handling node (37) receives the indication with accompanying identification data, investigates the identification data in order to determine the identity of a candidate for the further base station and orders the candidate base station to perform an interference limitation activity.

The invention discloses a radar cross-section (RCS) layered calculation method of a ship target within an atmospheric duct range. According to the invention, after partition of a three-dimensional geometric model of a ship target, most similar basic geometrical shapes of the all partitioned parts of the three-dimensional geometric model are selected and are approximated as basic scatterers; geometric information of all basic scatterers are extracted and RCSs of the all basic scatterers are calculated; Change relations of RCS values of all parts of the ship target at different heights are calculated by combining heights of all parts of the ship target; and scattering power intensity of the ship target is calculated according to a transmission factor of an electromagnetic wave of an atmospheric duct. According to the RCS calculation method of the ship target within the atmospheric duct range provided in the invention, computational complexity and requirements for computing equipment canbe substantially reduced and real-time calculation is allowed. Besides, an influence of up-and-down sea surface on transmission of an electromagnetic wave is fully considered, and a calculation result is more reasonable and effective. The method provided in the invention has important military significances for technological development, equipment update, and operational application of microwave beyond-the-horizon radar.

The present invention provides a method, system and detection machine for detecting the atmospheric waveguide environment, wherein the method includes: emitting laser light into a simulated atmospheric environment; acquiring the laser light to irradiate aerosol particles with different radii in the simulated atmospheric environment, generating The laser detection backscattered light signal; the scattered light signal after the laser detection is analyzed to obtain the backscattering characteristics of the laser detection of the aerosol particles with different radii; The characteristic parameters of the atmospheric waveguide are obtained based on the backscattering characteristics and the change of the atmospheric refractive index. The solution of the invention utilizes the laser to detect the atmospheric waveguide environment, and the detection has high real-time performance.

The invention relates to a base station interference elimination method and a base station interference elimination device based on a time slot. The base station interference elimination method comprises steps that interference information of a base station is acquired, and the interference mode of the base station is determined; according to the interference mode, the protection symbol of the special time slot of the base station under interferences is adjusted. By improving the setting way of the protection time slot, a proportion among a downlink time slot, a protection time slot, and an uplink time slot of a special sub-frame is adjusted flexibly and automatically under consideration of both of an uplink capacity and a downlink capacity in atmospheric duct. The condition of the uplinksub-frame of the base station under the interferences is analyzed accurately, and the uplink business volume and the downlink business volume of a station are determined at the same time, the optimalproportion of the special sub-frame is calculated, and at the same time, adjustment of a special time slot of an interference source base station is additionally provided, and therefore interference effect under the atmospheric duct effect is eliminated more comprehensively, and user perception is improved.

The embodiment of the invention discloses a method and system for positioning TD-LTE network atmospheric waveguide interference and belongs to the technical field of wireless network optimization. According to the method, cell performance interference data is taken as basic data, and starting from atmospheric waveguide cell performance, geographic positions and time characteristics, big data mining and analysis are carried out deeply, so LTE cells interfered by the atmospheric waveguide interference are positioned accurately. Compared with the prior art, the method and the system provided by the invention have the advantages that judgment conditions are relatively sufficient, misjudgment of lifting interference such as interference unit interference can be effectively avoided, and the judgment efficiency and accurately are relatively high. According to the method and the system, the atmospheric waveguide interference judgment is carried out based on background network management performance and engineering parameter data, the cost is low, the timeliness is high, the efficiency is high, and the method and the system are very applicable to daily judgment of the atmospheric waveguideinterference.

The invention discloses a base station and a signal processing method thereof. The method which comprises the following steps: measuring an atmospheric duct detection parameter and a physical layer conventional parameter; processing the obtained atmospheric duct detection parameter and determining whether atmospheric duct interference exists in combination with the preset parameter threshold of an atmospheric duct interference detection model; determining a corresponding demodulation strategy to demodulate a uplink transmission signal according to an obtained result indicating whether the atmospheric duct interference exists; according to the obtained result indicating whether the atmospheric duct interference exists, determining a corresponding scheduling strategy and performing scheduling based on a demodulation result and a measurement result of the physical layer conventional parameter. The method deals with the influence of the atmospheric duct on the interfered base station, and well solves problems of uplink system performance reduction, seriously deteriorated wireless call completing rate, call drop rate, and handover success rate, and poor user experience of the base station, especially a TDD-LTE base station under strong interference such as the atmospheric duct in the prior art.

The invention provides a configuration method and device for a physical random access channel (PRACH) and a base station. The configuration method comprises the following steps of acquiring a preset number of continuous physical resource blocks with the smallest interference in the bandwidth of a target base station when the signal interference of the target base station is detected; determining an initial position of a target frequency point according to the obtained information of the physical resource blocks; and modifying a frequency point offset position of the physical random access channel (PRACH) of the target base station according to the initial position of the target frequency point. According to the scheme, the interference can be effectively reduced, and a problem that local uplink receiving is still seriously interfered by a far-end base station in a scheme of avoiding the far-end interference caused by the atmospheric waveguide in the prior art is solved to the greatestextent.

The present disclosure provides a method (300) in a network device for identifying source of interference propagated via atmospheric duct. The method comprises: determining (S310) a set of interferingsource candidates; assigning (S320) random access resources to each interfering source candidate in the set; receiving (S330) from each interfering source candidate in the set a measurement result acquired at the interfering source candidate by receiving random accesses from other interfering source candidates in the set; and identifying (S340) whether any of the interfering source candidates inthe set is a source of interference propagated via atmospheric duct or not based on the measurement results.

The invention discloses an atmospheric profile parameter acquisition system. The system includes a captive balloon, a coordinator, a receiving terminal and at least one group of acquisition unit. The at least one group of acquisition unit is sequentially fastened on the captive rope of the captive balloon; the acquisition unit includes a router and multiple acquisition nodes connected sequentially; the acquisition nodes are for the acquisition of three meteorological parameters including temperature, humidity and air pressure of an atmospheric profile, whose height the acquisition nodes are on; the router is used to collect the meteorological parameters of all acquisition nodes in the unit, in which the router locates; a coordinator and the router of the acquisition unit are in a wireless network; the coordinator receives meteorological parameters collected by each router and forwards the meteorological parameters to the receiving terminal. The system of the invention can realize real-time acquisition of three meteorological parameters including temperature, humidity and air pressure of the sea surface on the same longitude and latitude and obtain gradient distribution values concerning the three meteorological parameter values of the profile, and is conductive to accurate prediction of the time and region of atmospheric duct.

The invention discloses a method for inverting an atmospheric waveguide based on radar echo data of an electromagnetic wave parabolic equation adjoint mode, which specifically comprises the steps of: describing a waveguide through employing a parameterized model function according to the characteristics and causes of the atmospheric waveguide; determining a mathematical model of electromagnetic wave one-way propagation loss and simulated radar echo power in actual atmosphere; establishing a mathematical model of a target function by using the actually measured radar echo power and the simulated radar echo power; and inverting the gradient of the parameters of the atmospheric waveguide relative to the target function by using the established target function and adopting an adjoint algorithm, and then inverting the parameters of the atmospheric waveguide by a gradient descent algorithm. Therefore, the number of times of running a forward modeling mode in the inversion calculation is reduced, the calculation time of the forward modeling mode is greatly shortened, guarantee is provided for the real-time performance of the inversion calculation, and the real-time performance of the inversion is improved. During inversion, the inversion parameters can be converged well only by a small number of iterations, and the inversion precision can be improved along with the increase of the number of iterations.

The invention provides an atmospheric waveguide interference suppression method and device, relates to the technical field of communication, and is used for reducing the influence of atmospheric waveguide interference on a base station. The method comprises the following steps that: computer equipment acquires a current communication parameter and a current meteorological parameter, and inputs thecurrent communication parameter and the current meteorological parameter into a pre-trained prediction model to obtain a prediction value of an atmospheric waveguide interference parameter; and then,the computer equipment determines an atmospheric waveguide interference suppression strategy corresponding to the predicted value according to the predicted value of the atmospheric waveguide interference parameter. The atmospheric waveguide interference suppression method and device are applied to the process of suppressing atmospheric waveguide interference.

The invention relates to a stepwise regression estimation method for radar detection efficiency and aims to solve the problem of difficulty in prediction of the remote beyond-visual-range detection efficiency of a marine microwave radar under the condition of atmospheric duct. The method comprises the following steps of: on the basis of a microwave signal beyond-visual-range transmission principle under the condition of the atmospheric duct, according to radar echo signal data, analyzing an internal relation between echo strength and distance extension, performing multiple stepwise regression computation, and establishing a marine radar detection efficiency prediction model based on radar echo to implement prediction of the detection efficiency of the marine radar. Implementation software can be embedded into radar equipment, hardware is eliminated, cost increase is not required, and the beyond-visual-range detection efficiency of the microwave radar can be predicted in real time.

The embodiment of the invention discloses a communication method and a communication device. The method comprises the steps that a first base station can send first information to a second base station through a core network after determining that the first base station is affected by the atmospheric waveguide interference of the second base station, so as to inform the first base station that thefirst base station generates the atmospheric waveguide interference to the second base station. After the first base station determines that the first base station is interfered by the atmospheric waveguide of the second base station; a second base station is notified in a wired link mode; specifically, first information can be sent to a second base station through a core network, therefore, thereceiving of the first information by the second base station is not easily influenced by the natural environment, so that the success rate of receiving the message sent by the first base station by the second base station can be improved, the second base station can timely perform corresponding interference prevention, and the success rate of eliminating atmospheric waveguide interference can befurther improved.

The invention discloses an atmospheric waveguide parameter estimation method based on DNN, and the method comprises the steps: extracting the attenuation features of a signal in an atmospheric waveguide through a DNN network, converting a parameter estimation problem into a DNN network feature extraction problem, and finding out the mapping relation between radio wave signal attenuation and atmospheric waveguide parameters at different distances; establishing a propagation model of the X-band signal in the atmospheric waveguide, taking power sampling points at different distances as input, andperforming atmospheric waveguide parameter estimation through a radio wave signal of a sparse frequency point so as to achieve atmospheric waveguide parameter estimation of continuous frequency. According to the method, the defects of low precision and long consumed time of numerical calculation can be overcome, an accurate prediction result can be obtained at a relatively long distance, and furthermore, a continuous frequency estimation result can be obtained by utilizing sparse point frequency training.

The invention provides an interference suppression method, system and device and a computer readable storage medium, and relates to the technical field of wireless communication. The interference suppression method comprises the following steps that: a disturbed base station performs interference detection by using a synchronization signal sent by an interference application base station; the disturbed base station reads the identifier of the interference application base station, and determines the propagation time delay from the interference application base station to the disturbed base station according to the position of the related peak value obtained by interference detection; the disturbed base station sends propagation time delay from the interference application base station to the disturbed base station to the disturbed base station according to the identifier of the interference application base station; the interference application base station determines a interference application base station downlink time slot causing interference to the disturbed base station uplink time slot according to the propagation time delay; and the interference application base station sets the OFDM symbol in the downlink time slot of the interference application base station as a protection time slot. The atmospheric waveguide interference in the TDD mobile communication system can besuppressed, so that the operation efficiency and the user experience of the TDD mobile communication system are improved.

The invention discloses an accurate positioning and automatic optimization method for an atmospheric waveguide, comprising: detecting a suspected interference source for a time domain feature and a frequency domain feature of an atmospheric waveguide interference to obtain a suspected interference source eNodeBID of a plurality of suspected interference source cells; performing feature coding on the latter N bits of the suspected interference source eNodeBID to obtain a feature coding sequence; transmitting an electromagnetic wave signal including the feature code sequence to the interfered cell on the last two symbols of the DWPTS field by the plurality of suspected interference source cells; obtaining M suspected interference sources eNodeBID with the strongest interference according tothe intensity of the electromagnetic wave signal received by the interfered cell, and decoding the feature coding sequence corresponding to the M suspected interference sources eNodeBID with the strongest interference to obtain the actual interference source eNodeBID and its corresponding actual interference cell. The invention has the advantages of high positioning accuracy of the atmospheric waveguide and fast optimization speed.

The embodiment of the invention provides an interference control method and a device, a message sending method and a device, a message forwarding method and a device, communication equipment and a system. A reference signal sent by the victim base station has an addressing identifier; the addressing identifier corresponds to routing information of the victim node group; therefore, when the attacker base station monitors the reference signal, the attacker node group can send a response message to the victim node group according to the addressing identifier, so that the victim base station in the victim node group can determine that the attacker base station has received the reference signal sent by itself according to the response message, and then other processes of atmospheric waveguide interference control are continued. The attacker base station side sends the message to the victim base station side so as to inform the victim base station that the attacker base station has monitoredthe reference signal, so that the victim base station can continue to cooperate with the attacker base station to carry out the subsequent process of atmospheric waveguide interference control, and the implementation of atmospheric waveguide interference control is facilitated.

The invention discloses an atmosphere waveguide monitoring method employing a wind profile radar and an RASS, and the method can effectively monitor a surface and a lifting waveguide through employing the wind profile radar and the RASS, and gives the type of an atmosphere waveguide and the feature value of the atmosphere waveguide. In an actual application process, the method can continuously monitor the surface and the lifting waveguide without air sounding equipment, does not cause the loss of a device, and reduces the measurement cost. Compared with a conventional air sounding method, the method is simple in operation, and is high in measurement speed.

The invention provides a method, a device, equipment and a medium for positioning far-end interference, and the method comprises the steps: obtaining an unknown adjacent cell, the distance between which and a base station is greater than a preset threshold value, according to an ANR (Automatic Neighbor Relation) process under the condition that a far-end interference characteristic signal is detected; and executing a process of performing remote interference management RIM on the unknown neighbor cell. According to the scheme of the invention, the automatic neighbor relation ANR process is added before the remote interference management RIM process is executed, the unknown neighbor of which the distance to the base station is greater than the preset threshold value is obtained, the remote interference caused by the atmospheric waveguide is discovered and positioned in an assisted manner, the number of the base stations for monitoring and sending the configuration reference signal RS managed by the OAM system is reduced, and the monitoring efficiency of the remote interference caused by the atmospheric waveguide is improved. The management overhead of the OAM system can be saved, and the power consumption of the base station can be reduced.

The invention provides an atmospheric waveguide interference suppression method and device, which relate to the technical field of communication and are used for reducing the interference intensity ofa downlink wireless signal of a disturbing base station on an uplink wireless signal of a disturbed base station. The method comprises the following steps that: computer equipment constructs a poweranalysis model according to a first constraint condition of a disturbing base station group and a second constraint condition and a third constraint condition of each disturbing base station in the disturbing base station group, and determines the transmitting power of each disturbing base station in the disturbing base station group according to the power analysis model. The embodiment of the invention is applied to the atmospheric waveguide interference suppression process.

The invention discloses an interference suppression method and a base station, which can realize beam-level interference detection so as to realize beam-level interference suppression, can effectivelyreduce atmospheric waveguide interference, do not need manual adjustment and can reduce the on-station cost. The method provided by the invention comprises the following steps: determining M channelstate information (CSI) beams, wherein the interference noise power of the DMRS pilot signal carried by each of the M CSI beams is greater than a first preset value, the interference noise power of the SRS pilot signal carried by each of the M CSI beams is greater than a second preset value, the M CSI wave beams are wave beams on the same layer on the horizontal plane, the wave beams on the same layer comprise N CSI wave beams, and M and N are positive integers; and if the ratio of M to N is greater than a third preset value, not scheduling and sending N CSI beams included in the same layer ofbeams.

An atmospheric waveguide set forecasting method based on YSU scheme key parameter disturbance comprises the following steps of 1) selecting a regional numerical weather forecasting mode, and setting amode boundary layer parameterization scheme as a YSU scheme; 2) taking a morphological parameter pfac in the YSU boundary layer parameterization scheme as a key parameter, and setting a parameter value range and an interval; 3) calculating the number of members in the set according to the value range and interval of the key parameter pfac; 4) disturbing the key parameter pfac according to the value range and interval of the key parameter pfac, compiling a numerical weather forecast mode for each pfac value, and taking the compiled executable file number as one of the set members; 5) obtainingthe atmospheric waveguide set forecasting mode member based on the key parameter disturbance of the YSU boundary layer scheme after all disturbance members of pfac are compiled, and 6) utilizing theset forecasting mode member obtained in the previous step to carry out atmospheric waveguide simulation and forecasting.

The embodiment of the invention provides a signal transmission method and communication equipment. The signal transmission method comprises the steps of determining a sending starting condition of a first reference signal and / or determining a sending stopping condition of the first reference signal according to at least one of historical sending information of the reference signal, interception information of the reference signal, a first triggering condition and a second triggering condition. In the embodiment of the invention, the types of the first reference signals comprise a first type and a second type, and the first reference signals of the first type are used for triggering other communication equipment to execute interference management operation, and the first reference signals of the second type are used for indicating whether the atmospheric waveguide phenomenon disappears or not. Through the first reference signal with the first type and the second type, the communicationequipment can be prevented from executing unnecessary interference management operation, so that the utilization efficiency of network resources can be improved.

The invention provides an atmospheric waveguide interference processing method and device, a base station, a communication system and a storage medium. The method comprises the following steps: obtaining first detection information corresponding to a first edge PRB located at the edge of a first carrier and second detection information corresponding to a center PRB located at the center of the first carrier, judging whether adjacent channel interference detection is needed or not; if so, carrying out energy detection on a second edge PRB which is located at the edge of a second carrier and isadjacent to the first edge PRB, determining whether the second edge PRB is interfered with by the adjacent-channel atmospheric waveguide, and if so, sending interference detection information and carrying out interference avoidance processing based on interference avoidance configuration information issued by the network management system. According to the method and device, the base station, thecommunication system and the storage medium, the problem that adjacent-channel atmospheric waveguide interference greatly influences uplink receiving of the base station side can be solved, time-frequency resource expenditure and scheme complexity are both considered, and the method and device can be effectively applied to an existing network of an operator.

The invention discloses a wireless communication interference prediction method for an atmospheric waveguide. The method comprises the following steps: calculating the regional occurrence probabilityof the waveguide by using a statistical method; establishing a relational expression of an electromagnetic wave wavelength, an emission elevation angle and a waveguide parameter when the electromagnetic wave is captured; calculating a disturbing end capture probability and a disturbed end disturbed probability based on a relational expression of an electromagnetic wave wavelength, an emission elevation angle and a waveguide parameter when the electromagnetic wave is captured; and establishing a waveguide interference event prediction model according to an addition principle and a multiplication principle based on the region occurrence probability of each type of waveguide, the disturbing end capture probability and the disturbed end disturbed probability, and predicting the waveguide interference event occurrence probability of the region to be predicted according to the waveguide interference event prediction model. According to the method, the waveguide interference event can be predicted, so that an adversarial means can be adopted in advance, and the quality of wireless communication is improved.

The invention discloses a method, device, equipment and medium for determining atmospheric waveguide interference. The method includes: obtaining the user's preset field control plane and recording XDR data in the whole business process of the user plane; slicing the XDR data according to the preset duration granularity, and determining the sliced ​​XDR data and the key performance corresponding to the XDR data Indicator KPI; use the preset calculation formula to make statistics on the sliced ​​XDR data and KPI, and use the statistical results as the original slice characteristics of the XDR data; determine whether the user is interfered by the atmospheric waveguide according to the original slice characteristics. According to the embodiments of the present invention, it is possible to improve the accuracy of identifying users who are interfered by the atmospheric waveguide.