3183 results about "Subframe" patented technology

A method can include receiving, by a wireless device, one or more discontinuous reception (DRX) configuration parameters indicating: a first DRX cycle; a DRX slot offset; and a DRX on-duration timer. The method can also include determining, for starting the DRX on-duration timer, a DRX cycle. The DRX cycle can be the first DRX cycle, based on the one or more DRX configuration parameters not indicating the second DRX cycle with the non-integer value. Alternatively, the DRX cycle can be the second DRX cycle, based on the one or more DRX configuration parameters indicating the second DRX cycle with the non-integer value. A parameter of the one or more DRX configuration parameters can indicate the non-integer value of the second DRX cycle. The method can further include starting, after the DRX slot offset from a subframe determined based on the DRX cycle, the DRX on-duration timer.

A vertically-movable, transmission-friendly, and controllable stroller includes a front wheel component, rear wheel component, frame, and rail component. The front wheel component includes a front wheel hanger, front lateral right and left wheels mounted on the bottom of the front wheel hanger. The rear wheel component includes a rear wheel hanger, rear lateral right and left wheels mounted on the bottom of the rear wheel hanger. The frame includes front, rear, right and left lateral subframes. The front lateral subframe has a bottom pivotally connected to the front wheel component. The rear lateral subframe has a bottom pivotally connected to the rear wheel component. The rail component includes front and rear right rails disposed on front and rear right lateral upright tubes respectively, allowing left and right ends of a right lateral top tube to be vertically slidingly connect between the front and rear right lateral upright tubes.

The invention discloses an automobile front subframe lightweight design method considering modal constraint. The method comprises the following steps: (1) constructing a front subframe parameterized model and a weight-modal simulation model by adopting CATIA (Computer-graphics Aided Three-dimensional Interactive Application) and Altar Optistruct; (2) establishing a population in a design space based on a space filling Latin hypercube sampling method; (3) constructing a classification cooperation speed updating formula based on a particle swarm algorithm to generate offspring particle individuals; (4) constructing a Gaussian process machine learning model and a fitness evaluation function, and screening an optimal offspring particle individual based on a feasibility rule; and (5) constructing a comprehensive score calculation formula according to a statistical ranking method to determine the updating condition of the population individuals, updating the database and skipping to the step (3) until the optimized structure meets the requirement. According to the method, the coverage capability of the filial generation in the target space is enhanced through the classification collaborative speed updating formula, and the prediction precision of the Gaussian process machine learning model is continuously improved, so that the optimization performance of the lightweight of the front subframe of the automobile is improved.

Examples described herein include apparatuses and methods for full duplex device-to-device cooperative communication. Example systems described herein may include self-interference noise calculators. The output of a self-interference noise calculator may be used to compensate for the interference experienced due to signals transmitted by another antenna of the same wireless device or system. In implementing such a self-interference noise calculator, a selected wireless relaying device or wireless destination device may operate in a full-duplex mode, such that relayed messages may be transmitted as well as information from other sources or destinations during a common time period (e.g., symbol, slot, subframe, etc.).

Resources are configured, by frame / subframe / slot / symbol, for uplink communication components, downlink communication components, radar sensing components, or flexible components. Flexible components are configured by symbol for uplink or downlink communications, radar sensing, or flexible usage. Full, partial or no overlap between resources for uplink, downlink or sidelink communication and resources for radar sensing may be configured. Frequency configuration for radar sensing may be in absolute units or grid units, and waveforms other than OFDM may be used for radar sensing. Configuration may be initiated by a base station in response to explicit or implicit request by a UE for sensing resources. A UE may sense resources within a configured resource pool for availability before using the resources for radar sensing.

Systems and techniques are described for wireless communications. For example, a computing device can transmit, to a plurality of wireless communication devices, a message comprising a plurality of available channel subframes. The computing device can receive, on one or more available channel subframes of the plurality of available channel subframes from one or more wireless communication devices of the plurality of wireless communication devices, an initiation request message requesting synchronization with the network device. The computing device can transmit, on the one or more available channel subframes to the one or more wireless communication devices, an initiation response message confirming the synchronization with the network device. The computing device can establish a synchronized connection with the one or more wireless communication devices on the one or more available channel subframes.

The invention discloses an ML-based rear subframe structure lightweight and modal optimization target design method, which comprises the following steps: (1) through three-dimensional modeling, statics analysis and modal analysis, constructing a mathematical model corresponding to the weight of a rear subframe and first-order inherent frequency simulation; (2) generating a population based on a Maximin criterion and a Latin hypercube, and establishing a radial basis function machine learning model; (3) generating candidate offspring individual vectors by adopting a Pbest-driven DPM evolutionary strategy based on an Eplison function; (4) constructing a minimum and maximum Pareto front lifting function to screen real offspring individual vectors; and (5) performing simulation evaluation on a real offspring individual vector, adaptively switching the reference vector type based on a reverse generation distance updating condition, returning to the step (3) until an optimization target meets a design requirement, and outputting an optimal optimization design parameter value. According to the method, the evolution direction is adaptively adjusted according to the population simulation result, and the optimization design effect on the two targets of lightweight and modal optimization is good.

An electrified vehicle includes a front subframe, a rear subframe, and a body that connects the front subframe to the rear subframe so that forces acting on the front subframe and the rear subframe are transmitted through the body. The vehicle also includes a housing coupled to an underside of the body between the front subframe and the rear subframe. An energy storage system is enclosed in the housing and includes a battery and a battery interface configured to electrically couple the battery to at least one component of the electrified vehicle.

Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

Disclosed are systems and techniques for wireless communications. For example, a network device can divide a data package into a plurality of segments. The network device can transmit, to a plurality of wireless communication devices, a broadcast message indicating a first time to start receiving a plurality of subframes comprising the plurality of segments, a total number of the plurality of segments, and a total number of the plurality of subframes for the data package. The network device can transmit, to the plurality of wireless communication devices starting at the first time, the plurality of subframes comprising the plurality of segments.

The embodiment of the invention provides a data transmission method and a related device. Specifically, a transmitting end acquires a superframe comprising a plurality of subframes, the subframes comprising training symbols and pilot symbols. Wherein in one polarization direction, the number of the training symbols in the sub-frame is NTS, the number of the pilot symbols in the sub-frame is NPS, both the NTS and the NPS are integers greater than 1, the sum of the NTS and the NPS is an odd number, and the sum of the NTS and the NPS is greater than or equal to 5. One symbol in the subframe is both a training symbol and a pilot symbol, each training symbol and each pilot symbol are one of four complex numbers of-A-Aj,-A + Aj, A-Aj and A + Aj, and A is a real number. Every continuous NPG symbols in the subframe comprise one pilot symbol located at a fixed position, and NPG is 96 or 128. And further, the transmitting end transmits the superframe. It can be seen that the interval of inserting the pilot symbols in the sub-frame is larger, and redundancy is reduced. In addition, one symbol in the sub-frame is both a training symbol and a pilot symbol, so that the structure of the sub-frame is simplified.

The invention provides a welding tool for an automobile rear auxiliary frame cross beam, and belongs to the technical field of automobile cross beam welding, the welding tool comprises a base, a rear auxiliary frame main body, an operation table and a welding robot, and the operation table and the welding robot are arranged on the base, and the welding tool further comprises a positioning splicing assembly and a flow guide destressing assembly; protective gas is integrated on the third clamping jaw, the third clamping jaw can effectively guide protective gas flow to a welding seam while fixing the side cross beam, and effective flow guide of the protective gas can be achieved in cooperation with arrangement of the movable spraying pipe; during welding, the impeller is static to block gas, the flow speed is reduced, welding fluid is prevented from splashing and losing due to overlarge airflow impact, and stable combustion of welding arcs is maintained; in the cooling stage after welding is completed, the inductor controls the electromagnetic base to be powered off, gas flow is increased, the cooling speed is increased, meanwhile, vibration is generated to be matched with cooling to eliminate welding residual stress, the stability and reliability of a weldment are improved, the production period can be shortened, and the production efficiency is improved.

Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) in a wireless communication system using an unlicensed spectrum. The UE includes a processor circuitry and radio front end circuitry coupled with the processor circuitry. The processor circuitry is configured to determine UE processing time for a first physical downlink shared channel (PDSCH) transmission and a second PDSCH transmission, and an additional processing time corresponding to the first and the second PDSCH transmissions. The processor circuitry is configured to process a hybrid automatic repeat and request acknowledgement (HARQ-ACK) assessment information for inclusion in a subframe on a physical uplink control channel (PUCCH) following the UE processing time and the additional processing time. The radio front end circuitry is configured to receive the first and the second PDSCH transmissions from a base station, and transmit the HARQ-ACK assessment information on the PUCCH to the base station.

A base station transmits a downlink control information (DCI) to a wireless device. The DCI comprises: an indication of resource blocks for wireless device transmission of uplink data via a subframe of an unlicensed cell; a first field comprising an index indicating a starting position for the wireless device transmission of the uplink data; and a second field indicating an ending symbol for the wireless device transmission of the uplink data, the ending symbol being one of pre-configured ending symbols. The base station receives the uplink data, via the unlicensed cell, starting at the starting position in the subframe and ending before the ending symbol. The uplink data is received based on a listen-before-talk procedure indicating a clear channel before the starting position. The uplink data is mapped to resource elements corresponding to the resource blocks based at least on the starting position and the ending symbol.

Apparatus and methods are provided to enhance communications for NTN. In some aspects, a base station (BS) comprises a processor configured to schedule an uplink transmission in response to an uplink transmission request from a user equipment (UE) using one or more subframes ranging from a first uplink subframe to a last uplink subframe. The processor is further configured to determine or receive a timing advance (TA) indicating amount of subframes transmitted during a time delay between the UE and the BS and schedule a downlink transmission aligned with the uplink transmission. The downlink transmission is blocked from subframes ranging from TA plus one or more subframes ahead of the first uplink subframe to TA minus one or more subframes ahead of the last uplink subframe. The processor is further configured to transmit and receive, via a non-terrestrial equipment, the uplink and the downlink.

The invention discloses a 4G FDD stock terminal direct connection satellite-oriented time synchronization method, which comprises the following steps: firstly, a base station delays a starting point of a preamble sequence detection window and enlarges the window size, the base station receives a preamble sequence in the enlarged window and detects the size of time delay by decoding the preamble sequence, and after the base station determines the size of the time delay, the base station delays the starting point of the preamble sequence detection window; according to the method, time delay is divided into an integer part tau i and a decimal part tau f by taking milliseconds as a unit, terminals are divided into two types according to whether the decimal time delay is greater than 0.66 ms or not, so that an uplink frame structure of a base station is modified, the base station determines an uplink subframe scheduling strategy according to the uplink frame structure, the decimal part tau f of the time delay is used for determining a TA value, and the TA value is used for scheduling the uplink subframe. The integer part tau i is used for delaying receiving of uplink information, and the scheduling strategy is applied to subsequent receiving and transmitting of Msg3, downlink HARQ and other uplink information; the stock 4G terminal is directly connected with the satellite under the condition that only the base station side protocol is modified and the terminal side protocol is not changed, so that the 4G communication system supports larger time delay, and meanwhile, the upgrading cost of an operator and a user is reduced.

The invention provides a point-to-multipoint communication method, device and system, equipment and a storage medium, and belongs to the technical field of optical communication. The method is applied to local side equipment in a point-to-multipoint communication system, and comprises the following steps: acquiring channel parameters of terminal equipment with downlink data currently and the data volume of the downlink data, and generating and sending at least one downlink frame based on the channel parameters of the terminal equipment and the data volume of the downlink data, the downlink frame comprises a plurality of subframes, in each downlink frame, the ith subframe bears management information of the (i + m) th subframe and downlink data of at least one terminal device, and for each subframe, the management information of the subframe comprises an identifier of the terminal device to which the downlink data borne by the subframe belongs and information of an occupied time-frequency resource. By adopting the method disclosed by the invention, point-to-multipoint flexible communication can be realized.

The invention discloses a communication-detection integrated sonar signal design method and device based on multi-pulse composite modulation, and the method comprises the steps: dividing a total frame period into a detection sub-frame and a communication sub-frame, enabling the detection sub-frame to achieve the high-resolution distance measurement through employing a bidirectional linear frequency modulation (BILFM) signal, a communication sub-frame adopts a multi-frequency multi-phase composite modulation (MTPM) signal to realize high-bit-rate data transmission; after band filtering, orthogonal demodulation, low-pass filtering and down-sampling preprocessing are carried out on detection sub-frame echoes, distance and speed information is extracted by adopting fast-time low-sampling two-dimensional fast Fourier transform (2D-FFT), unambiguous Doppler frequency is recovered by utilizing the Chinese remainder theorem (CRT), and accurate speed measurement of long-distance and high-speed targets is realized; a communication subframe receiving signal is subjected to IQ demodulation after down-conversion, Costas loop carrier synchronization and matched filtering, and multi-frequency multi-phase coded data are extracted. According to the method, the time-frequency collaborative design of detection and communication is realized, the distance resolution and the speed measurement range are considered, and the signal bandwidth utilization rate and the underwater information transmission reliability are remarkably improved while the system complexity is kept low. The device comprises a processor and a memory, and an executable program for implementing the method is stored in the memory. The technology can be widely applied to the fields of unmanned underwater vehicles, ocean monitoring, underwater sensing networks and the like.

The utility model discloses an auxiliary frame of a new energy vehicle and the new energy vehicle, and the auxiliary frame comprises a first cross beam, a second cross beam, a first connecting piece, a second connecting piece, a third connecting piece, a fourth connecting piece, a first longitudinal beam, a second longitudinal beam and a third cross beam, the third cross beam is arranged between the first cross beam and the second cross beam and is closer to one side of the second cross beam, and two ends of the third cross beam in the length direction are respectively connected with the first longitudinal beam and the second longitudinal beam. The lower end face of the third cross beam downwards protrudes out of the plane where the lower end face of the second cross beam is located in the Z direction, so that the third cross beam plays a role in intercepting obstacles on the ground, a battery arranged behind the auxiliary frame is protected, and the situation that the obstacles on the ground rub the bottom of the battery and collide with the front end of the battery is avoided.

An isolator includes multiple lobes that increase the overall volume of the material used to form the isolator. The isolator may be enclosed by several covers used to constrain the isolator and allow for the additional material provided by the lobes. An assembly of the isolator and the covers may be secured to an object (e.g., a drive unit or subframe) using respective openings in the lobes and the covers.

The utility model discloses a rear auxiliary frame, a rear auxiliary frame assembly and a vehicle, the rear auxiliary frame comprises two longitudinal beams which are arranged at intervals along the transverse direction; the front cross beam is connected with the front ends of the two longitudinal beams respectively, and the rear cross beam is connected between the two longitudinal beams and located behind the front cross beam; at least one of the front cross beam and the rear cross beam is arranged in a protruding mode in the direction away from the other cross beam, so that a motor installation space used for avoiding a driving motor is formed between the front cross beam and the rear cross beam. According to the rear auxiliary frame, at least one of the front cross beam and the rear cross beam protrudes in the direction away from the other cross beam, so that the motor installation space for avoiding the driving motor is formed between the front cross beam and the rear cross beam, the driving motor can be conveniently arranged, the using effect is better, and the application range is wider.

The invention discloses high-fatigue-performance cold-rolled steel for an automobile auxiliary frame and a preparation method thereof, and belongs to the technical field of automobile material preparation. The cold-rolled steel comprises the following chemical components in percentage by mass: 0.06 to 0.16 percent of C, 0.15 to 0.40 percent of Si, 1.0 to 2.5 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.01 percent of S, 0.02 to 0.1 percent of Al, 0.01 to 0.06 percent of Ti, 0.3 to 1.5 percent of Cr, 0.1 to 0.6 percent of Mo, 0.005 to 0.03 percent of Nb and the balance of Fe and inevitable impurity elements. The preparation method comprises the steps of smelting, continuous casting, heating, hot rolling, coiling, acid pickling, cold rolling and annealing. The cold-rolled steel has excellent mechanical properties and fatigue properties, meets the use requirements of steel for the automobile auxiliary frame, can replace currently used hot-rolled automobile structural steel, prolongs the service life of the auxiliary frame, and meanwhile, realizes light weight of an automobile body structure.

One embodiment is a system having a master unit coupled to first and second base station sources having different OTA frame boundary timings, where an access point coupled to the master unit receives fronthaul data for the first and second base station sources, determines a common OTA frame boundary timing, and aligns OTA symbols and frames for the first and second base station sources to the common OTA frame boundary timing. Another embodiment is a system having a base station synchronized with a timing grandmaster and a master unit, synchronized with the timing grandmaster, coupled to the base station. The master unit determines the time of day using the synchronization, identifies a system frame and subframe number using the time of day, acquires configuration information for communications with the base station using the system frame and subframe number, and identifies frame boundary timing using the configuration information.

The invention discloses an automobile rear subframe rigidity and NVH two-target design method, device and medium, and the method comprises the steps: (1) determining an automobile rear subframe optimization variable, and building an automobile rear subframe rigidity and NVH two-target mathematical optimization model; (2) generating a population based on Latin hypercube sampling, and obtaining stiffness values and NVH values of population individuals through simulation analysis; (3) in the first stage, generating a candidate solution through dimension reconstruction, and screening offspring individuals by adopting non-dominated sorting and angle penalty distance; (4) in the second stage, three groups are obtained based on mutual information and differential grouping and used for collaborative optimization to generate candidate solutions, and a multi-criterion method based on machine learning is adopted to screen offspring individuals; and (5) performing simulation evaluation on the offspring individuals, updating the database, updating the population in combination with an angle cosine screening function, and turning to the step (3) until the optimized structure meets the requirement. According to the method, efficient design is realized through an optimization strategy of dimension reconstruction and grouping collaboration.

The present invention relates to the field of wireless communication technology, and in particular to a terminal, an access network device, a wireless communication system, and an uplink control information transmission method. In a terminal, a receiving module receives downlink scheduling information of a downlink subframe F(i, j), a preconfigured downlink subframe set M where the downlink subframe F(i, j) is located is divided into N preconfigured downlink subframe subsets, the number of bits of a hybrid automatic repeat request-acknowledgement HARQ-ACK required to be fed back for each downlink subframe in a preconfigured downlink subframe subset is a predetermined value, and the number of bits of HARQ-ACK required to be fed back for any downlink subframe in different preconfigured downlink subframe subsets is different; a processing module generates a HARQ-ACK codebook according to the reception of downlink data, and generates uplink control information after encoding; a sending module sends uplink control information, and can support the situation where the number of HARQ-ACK bits required to be fed back for downlink subframes on different aggregated carriers is different.

Damping arrangement (10) of an active suspension for an axle of a motor vehicle, wherein a damping system interacts with each wheel of the axle, each of the damping systems comprising the following assemblies: A damper comprising a double-acting hydraulic cylinder and a piston, wherein the damper is coupleable to a wheel suspension system of the respective wheel. A hydraulic pump and an electric motor for driving the respective hydraulic pump, wherein the hydraulic pump can be driven by the electric motor in different directions of rotation to provide different delivery directions.A hydraulic unit comprising a hydraulic reservoir and valves, wherein the hydraulic pump and the hydraulic unit of the respective damping system interact with hydraulic chambers of the hydraulic cylinder of the respective damping system such that, depending on the delivery direction of the hydraulic pump of the hydraulic unit, movement of the piston in a first actuation direction or in a second actuation direction is provided, wherein the hydraulic pumps and the electric motors of both damping systems are combined to form a motor-pump unit (28). The motor-pump unit (28) is attached to a subframe (30) or subframe of the axle via a support (29). The motor-pump unit (28) is arranged below the support (29).

A receiver receives signals from a transmitter in subframes on subcarriers having orthogonal frequencies. A subset of the subframes include reference signals. The receiver generates a first channel estimate for a target subframe based on reference signals in the target subframe. The receiver also generates one or more second channel estimates for one or more other subframes based on one or reference signals in the other subframes. The receiver combines the first channel estimate and the one or more second channel estimates based on a frequency offset between the receiver and the transmitter to form a channel estimate of the target subframe. In some cases, the receiver performs joint estimates of a timing offset, a frequency offset, and a channel for the target subframe based on the reference signals, selected candidate timing offsets, selected candidate frequency offsets, and selected candidate channel estimates.

The invention relates to a subframe (14) for a motor vehicle, comprising a first attachment point (26) via which a first wheel guide (20) designed to guide a vehicle wheel (18) of the motor vehicle can be pivotally coupled to the subframe (14), and a second attachment point (28) spaced apart from the first attachment point (26), via which a second wheel guide (22) designed separately from the first wheel guide (20) and designed to guide the vehicle wheel (18) can be pivotally coupled to the subframe (14), wherein the subframe (14) has at least one deformation area (40) arranged between the attachment points (26, 28) and deformable in the event of an accident impact on the subframe (14), by the deformation of which the first attachment point (26) can be moved from its initial position (42) into a safety position (44).in which the first connection point (27) is arranged closer to the second connection point (28) than in the initial position.

The embodiment of the invention provides a data transmission method for optical communication and a related device, and solves the problem that a transmission symbol sequence in the prior art cannot be suitable for scenes above 800Gbps. Specifically, a transmitting end acquires a superframe comprising a plurality of subframes, the subframes comprising pilot symbols. Wherein in one polarization direction, the number NPS of pilot symbols in the sub-frame is an even number greater than 0, each pilot symbol is one of four complex numbers, namely-A-Aj,-A + Aj, A-Aj and A + Aj, A is a real number, every continuous NPG symbols in the sub-frame comprise a pilot symbol located at a fixed position, NPG is 96 or 128, the superframe comprises a first type of sub-frame, and the sub-frame comprises a second type of sub-frame. The first type of subframes further comprise NFAW frame synchronization symbols, each frame synchronization symbol is one of four complex numbers including-AFAW-AFAWj,-AFAW + AFAWj, AFAW-AFAWj and AFAW + AFAWj, the AFAW is a real number, and the NFAW is an even number. And further, the transmitting end transmits the superframe. It can be seen that the interval of inserting the pilot symbols in the sub-frame is larger, and redundancy is reduced.