58results about How to "Avoid strong interference" patented technology

An embodiment of the invention provides a transmission and reception method in vehicle-to-everything (V2X) communication. The transmission and reception method comprises the steps that a first type ofUE detects a PSCCH in the format of SCI X transmitted by other UE, determines whether to further measure PSSCH-RSRP of a PSSCH scheduled by means of SCI X and whether to further demodulate the PSSCHscheduled by means of the SCI X according to the SCI X. The transmission and reception method further comprises the steps that a second type of UE detects the PSCCH in the format of SCI X transmittedby other UE, and determines a TBS of the PSSCH scheduled by means of SCI X according to a modulation coding bit field in the SCI X and a predefined TBS mapping norm. The transmission and reception method further comprises the steps that the second type of UE determines transmission power of the PSCCH in the format of SCI X and the PSSCH scheduled by means of the SCI X according to a modulation mode. By adopting the transmission and reception method, the coexistence of the first type of V2X UE and the second type of V 2X UE can be better realized, and the transmission efficiency of the second type of V 2X UE is improved.

This invention discloses a method and a device for using cross slot resources in the time division duplex CDMA system conditions for using cross slots, assigning cross slot resources for users according to the designed conditions of using cross slots when a user applies for cut-in monitoring the cut-in user status in the cross slot to regulate and maintain the cross slot resources assigned to users. The device for realizing the said method is composed of a designing device, a storage device, a monitor device and a cross-slot distribution device.

The invention relates to a disturbance restrain method of time-slot code division multiple access system. Wherein, it comprises when the detected code channel is more than maximum code channel of receiver, the system changes the signal channel coding speed of user or the speed matching hole rate, reduces sent data, and changes modulation, to control the detected code channel under maximum code channel. The invention can reduce the drop communication rate of TD-SCDMA system at the region edge, to improve the system stability.

The invention relates to a signal reception and detection method. The method comprises the following steps: an adjacent cell with a pilot signal for disturbing data signals in the cell is a disturbed cell; only the data signals in the cell in the different time-frequency resource positions with the pilot symbols in the disturbed cell are received and detected; and the first default value is adopted as the reception and detection result of the data signals which are not actually received and detected. In the invention, the data in the same time-frequency resource position with the pilot symbols in the disturbed cell is disturbed, therefore, the undisturbed data, i.e. only the data in the different time-frequency resource positions with the pilot symbols in the disturbed cell is actually received and accepted. The intensive interference of pilot frequency of the adjacent cell to the UE on the edge of the cell is avoided, the decoding performance of the UE is enhanced, and the demodulation errors are reduced; and the error propagation caused during the soft-decision iterative decoding is also avoided, so the data receptivity of the UE is further improved. The invention also provides a UE as well as a method and a device for signal transmission.

The invention provides a device for simulating optical link linearization. The device comprises a laser, a first wavelength division multiplexer, a polarization modulator, a polarization controller, a polarization analyzer, a second wavelength division multiplexer, a first photoelectric detector and a second photoelectric detector. The invention further provides a method for simulating optical link linearization. According to the method, the polarization modulator and the polarization analyzer are equivalent to an asymmetric Mach-Zehnder modulator, analog signal strength is orthogonally modulated on a pair of simultaneously propagating optical links, the difference between offsetting angles of the two modulators is 90 degrees, and original analog signals are linearly restored at a far end by the aid of direct detection of the two links and digital signal processing technology. Demodulated signals cannot be intensively interfered by delay mismatching problems caused by double parallel structures, stability of a system is enhanced, highly coherent intrinsic signals are omitted, accurate polarization adjustment at the far end is omitted, and long-distance transmission of radio frequency signals is benefited.

The invention discloses a discovered signal transmission method and apparatus, and a cell discovering method and apparatus. The discovered signal transmission method comprises the steps of determining whether a channel in an unauthorized frequency band is in an idle state; if the channel in the unauthorized frequency band is in the idle state, in a transmission period of a discovered signal of a current period, sending the discovered signal in the channel in the idle state in the unauthorized frequency band; and if the channel in the unauthorized frequency band is not in the idle state, sending the discovered signal in a channel not in the idle state and not in the unauthorized frequency band in the current period. According to the method, the discovered signal can be sent in the unauthorized frequency band, so that the problems that spectrum resources cannot be allocated for the discovered signal due to shortage of the authorized frequency band resource or transmission of the discovered signal leads to strong interference are solved.

An airbag apparatus includes an airbag that deploys and inflates while being unfolded from an accommodating portion, when inflating gas flows into the airbag; and a regulating member that is able to regulate the deployment and inflation of an airbag. The regulating member is flexible, and includes a temporary holding portion that releasably and temporarily holds a folded portion that is a part of the airbag; an attachment portion that is attached to the accommodating portion; and a connecting piece portion that connects the attachment portion and the temporary holding portion. The temporary holding portion includes a base portion that is continuous with the connecting piece portion, and a cover portion that forms a holding concave portion for temporarily holding the folded portion, and is connected to the base portion. An opening for releasing the folded portion is provided at an inner circumference of a non-connected release edge.

The invention relates to the field of communication and discloses a method, a device and a system for realizing interference control and interference avoidance, and the method, device and system disclosed by the invention can be used for effectively lowering the strong interference on an MUE (MeNB user) in a coverage range caused by a micro base station in a network with different hierarchies. The method comprises: the micro base station and the MeNB obtain same subframe attribute information used for representing the setting modes of a muting subframe and/or protected subframe; the micro base station can effectively dispatch HUEs (Home NodeB users) within a scope of jurisdiction according to the obtained subframe attribute information, and controls the downlink transmission of the HUEs to realize interference control; and the MeNB can effectively dispatch MUE within a scope of jurisdiction according to the obtained subframe attribute information, indicates the MUE to measure and report parameters on the proper measurement position and controls the downlink transmission of the MUE so as to realize interference avoidance, therefore, strong interference on the MUE caused by the micro base station can be effectively avoided, and the throughput of the layered networking is improved.

The invention relates to a 5G ultra-dense wireless access network deployment system and a virtual cell updating method thereof, the 5G ultra-dense wireless access network deployment system comprises aplurality of AAUs, a plurality of DUs and a plurality of edge clouds, and the virtual cell updating method comprises an acquisition step, a calculation step and an updating step. On one hand, the user terminal is always ensured to access one or more AAUs with good communication quality in the system, so that strong interference can be avoided, a multi-point cooperative transceiving technology isenabled, the information transmission rate and reliability of the user terminal can be improved, and meanwhile, the application effect of V2X can be better achieved; And on the other hand, in the virtual cell updating method, the new DU takes over the virtual cell first, and then the current DU releases the virtual cell, so that application effect of the AAU-is realized. According to the virtual cell updating method, firstly, a new DU takes over a virtual cell. the virtual cell is released by the current DU after the user terminal moves the AAU-DU, effective cooperation between the AAU-DU-edgecloud is realized, updating of the virtual cell can be smoothly realized in the moving process of the user terminal, information transmission of the user cannot be interrupted, and better user experience can be achieved.

The invention discloses an electrified detection system for partial discharge of an electric sleeve. The electrified detection system comprises a directional antenna, a signal conditioner and a signal collector, wherein the directional antenna, the signal conditioner and the signal collector are sequentially connected; the directional antenna is used for detecting an electromagnetic wave signal radiated due to discharge of a to-be-detected position of the electrified sleeve, converting the electromagnetic wave signal into a voltage signal and sending the voltage signal to the signal conditioner; the signal conditioner is used for carrying out noise removing on the voltage signal, amplifying the voltage signal and sending the conditioned signal to the signal collector; the signal collector is used for obtaining a digital signal by carrying out AD (Analog to Digital) conversion on the conditioned signal, and storing and displaying the digital signal. According to the technical scheme disclosed by the invention, the detection sensitivity is increased, and strong interference from severe electromagnetic environment of a transformer substation to partial discharge detection is overcome.

The invention discloses an SAR image channel extraction method which combines gray-level threshold-value segmentation and contour shape identification. The method includes step1: adopting gray-level threshold-value segmentation to carry out a first background segmentation on an SAR image; step2: according to channel contour shape characteristics, carrying out sectioned modeling on channel areas, wherein the channel areas are represented as combination of a plurality of minimum external-connection rectangular windows; step3: combining minimum external-connection rectangular windows in the same area so as to form a plurality of second rectangular windows; step4: according to the shape and connectivity of a channel contour, splicing second rectangular windows which satisfy a condition into a rough channel area; and step5: carrying out gray-level threshold-value segmentation again so as to obtain a channel extraction image. The SAR image channel extraction method which combines gray-level threshold-value segmentation and contour shape identification inhibits background noises, which are approximate to both a water-body gray level and a shape characteristic in the SAR image, through combination of an image gray-level characteristic and a shape contour characteristic of the channel and a multi-mode SAR image segmentation decision so that channel areas are extracted precisely and accurately.

The invention relates to a method for controlling the speed rate of a reverse link based on the channel quality. In a system comprising an access terminal, a wireless access network, a grouped core network and an IP (Internet Protocol) network, the activated access terminal is graded according to the pilot power and the method for weighting factors is introduced to flexibly adjust the allocation of T2P streams. The method comprises the following steps of: (1) presetting a threshold value of a system load and calculating a load factor of the reverse link; (2) comparing the calculated load factor of the reverse link with the threshold value of the load to obtain an RAB (Radio Access Bearer) value; (3) adjusting the resource allocation of the T2P by the access terminal according to the current RAB value and the quality condition of the reverse channel of the access terminal; and (4) adjusting the transmission speed by the access terminal according to the allocated T2P resources and a mapping table of the data speed rate. The invention has higher system throughout, lower terminal transmission power and smaller system load, improves the utilization rate of the resources and simultaneously avoids the instability of the system because the terminal with poorer channel quality improves the transmission power.

The invention relates to the technical field of wireless communication, and particularly relates to a method and a device for performing signal transmission and aims at solving a problem of relatively high channel interference in the prior art. The method of the embodiment of the invention comprises that: all access points APs in a coverage area of a wireless local area network WLAN are grouped, wherein the APs in the same group after grouping can mutually acquire signal transmitting state, a perception area of each AP completely comprises the effective coverage area of other APs in the same group, and the APs which are arranged in different groups with the same allocated channel cannot mutually acquire the signal transmitting state and the perception areas are not overlapped. With adoption of the method and the device of the embodiment of the invention, the APs in the same group can share capacity of the same channel so that interference is avoided, the APs which are arranged in different groups with the same allocated channel cannot mutually acquire the signal transmitting state and the perception areas are not overlapped, and thus the APs of different groups respectively use the channels independently and generation of high interference is avoided.

The invention provides a resource distribution method and device for service access, wherein the resource distribution method comprises the steps of: determining at least one standby cell according to a received RRC (Regional Resource Center) connection request comprising cell information; correspondingly determining a downlink power factor value at each uniform downlink time slot of each same frequency carrier according to a carrier emission power value of the at least one standby cell at each uniform downlink time slot of each same frequency carrier; and determining a resource distribution priority according to the downlink power factor value at each uniform downlink time slot of each same frequency carrier, and then performing the resource distribution operation. In the invention, the resource with less downlink interference is selected for use, so that a received strong interference or a generated strong interference is avoided; the quality of service is increased; and the access efficiency is improved.

Disclosed is a method for reducing wireless-body-area-network (WBAN) system interferences. The method includes: a second multi-port repeater hub2 of a second adjacent body area network BAN2 sends an activation superframe interlacing request to a first multi-port repeater hub1 of a first adjacent body area network BAN1, wherein the activation superframe request includes a beacon offset sequence of the BAN2; and the hub1 feeds back an activation superframe interlacing response to the hub2 after performing judgment according to the beacon offset sequence of the BAN2, wherein the fed back activation superframe interlacing response includes a beacon offset sequence of the BAN1. After the method for reducing the WBAN system interferences is applied, generation of strong interferences between beacons is prevented so that transmission performance of BAN edge nodes and overall performance of a system are effectively ensured.

The invention discloses a circuit breaker operating mechanism and a circuit breaker and high-voltage applying the same. The circuit breaker operating mechanism comprises an operating mechanism box, a motor used for driving a dynamic contact insulating tension rod is mounted in the operating mechanism box, and the output shaft of the motor extends out of the operating mechanism box. By the arrangement that the motor is arranged in the operating mechanism box, the motor itself, a data transmission line and a power line are effectively protected, and interference caused by strong interference environment on an electromotor control system, data transmission and the like in field application are avoided; the motor is arranged in the mechanism box to be integrally formed with the mechanism box, so that the entire operating mechanism is more compact in structure and convenience in in-situ mounting and maintaining is achieved.