Abstract: Embodiments described herein provide methods and apparatus for performing a random access procedure to access a wireless communications network. A method in a wireless device comprises responsive to transmitting a first random access preamble to a base station using first random access resources in an uplink, UL, bandwidth part, BWP, of a carrier: selecting, based on an association, a first downlink, DL, BWP of the carrier, wherein the association maps a plurality of DL BWPs of the carrier to different values of a parameter related to physical random access configurations and/or to different UL BWPs of the carrier; and monitoring the first DL BWP in order to receive a random access response from the base station.

Abstract: The disclosure provides a projector and a projector firmware updating method therefor. The projector is connected to a cloud server through a network connection. The first processor of the projector executes a first firmware updating process corresponding to a request firmware, including: identifying the first request unique identification code of the projector and the request firmware serial number of the request firmware, and transmitting the first request unique identification code and the request firmware serial number to the cloud server; if the request firmware is not the latest version, receiving the first target firmware from the cloud server and updates the request firmware by using the first target firmware, and completing the first firmware updating process. The projector and projector firmware updating method of the disclosure can efficiently update the firmware to the latest or specific version according to the unique identification code of the projector.

Abstract: A control device and a circuit board are provided. The control device can cooperate with the circuit board, and includes a ball grid array. The ball grid array includes a plurality of power balls and a plurality of ground balls, which are jointly arranged in a ball region. The power balls and the ground balls are respectively divided into a plurality of power ball groups and a plurality of ground ball groups. One of the ground ball groups includes two ground balls and is adjacent to a power ball group. A ball pitch between the two ground balls is greater than that between one of the power balls and one of the ground balls adjacent to each other. The circuit board includes a contact pad array corresponding to the ball grid array of the control device so that the control device can be disposed on the circuit board.

Abstract: A voltage regulator dynamically adjusts the voltage distribution on a voltage rail based on multiple feedback measurements. The voltage regulator provides electrical power to a voltage rail at multiple power supply locations along the voltage rail. The voltage regulator obtains voltage measurements from multiple voltage sensing locations on the voltage rail and detects a spatially unequal voltage deviation in the voltage rail. The voltage regulator adjusts the electrical power provided to the voltage rail at each of the power supply locations to compensate for the spatially unequal voltage deviation in the voltage rail.

Abstract: The inventive subject matter is directed to headset audio systems having resonance chambers designed to improve a system's frequency response in certain ranges. Systems of the inventive subject matter include a casing that both holds a speaker driver and creates two resonance chambers. Each resonance chamber vents to ambient air outside the casing, where the length and cross-sectional areas of each vent can impact the system's frequency response. Each resonance chamber is tuned to a resonant frequency to improve the system's frequency response across a range of frequencies on either side of each chamber's resonant frequency.

Abstract: The invention refers to a method for selecting logical channels for transmission on granted uplink (UL) resources within a cell of a radio access network (RAN) comprising receiving, from a network node in the RAN, a grant of resources associated with a carrier frequency in unlicensed spectrum, the carrier frequency comprising a plurality of radio channels, and selecting one or more of a plurality of logical channels for transmission during a subsequent transmission time interval (TTI) using the granted resources, wherein the selecting is based on respective priorities associated with the logical channels and information indicating the respective availabilities, and/or radio qualities of tire radio channels. The invention further relates to methods for configuring selection of logical channels for transmission on granted UL resources within a cell of a RAN, as well as a network node and user equipment configured to perform operations corresponding to the referred methods.

Abstract: Embodiments of this application provide a downlink control information transmission method, an apparatus, and a system, so that after receiving one piece of DCI, the terminal device learns whether blind detection of DCI needs to be continued. The method includes: A terminal device receives first DCI, where the first DCI includes first indication information, and the first indication information is used to indicate a first antenna port. The terminal device assumes, based on the first antenna port and antenna port configuration information, whether second DCI exists. The configuration information may include an index of a CDM group to which each of a plurality of antenna ports belongs and a maximum quantity of CDM groups that is supported by the terminal device; or the configuration information may include one or more antenna port groups, and each of the one or more antenna port groups includes one or more antenna ports.

Abstract: Various embodiments may provide streaming service downlink assistance and/or uplink assistance mechanisms for a wireless device using attention (AT) commands exchanged between a modem processor of the wireless device and another processor of the wireless device. Various embodiments may include an AT command that is a bitrate recommendation action command including an indication of a stream identifier, an indication of a requested bitrate, and an indication of a direction. Various embodiments may include an AT response that is a bitrate recommendation response, the bitrate recommendation response including an indication of a stream identifier, an indication of a bitrate recommendation, and an indication of a direction.

Abstract: The inventive subject matter is directed to headset audio systems having resonance chambers designed to improve a system's frequency response in certain ranges. Systems of the inventive subject matter include a casing that both holds a speaker driver and creates two resonance chambers. Each resonance chamber vents to ambient air outside the casing, where the length and cross-sectional areas of each vent can impact the system's frequency response. Each resonance chamber is tuned to a resonant frequency to improve the system's frequency response across a range of frequencies on either side of each chamber's resonant frequency.

Abstract: A reacting device of dual path synchronous immunochromatographic platform includes a seat, an upper housing, and a fluid dividing funnel. The seat contains two immunochromatographic carriers. The hollow pipe portion has two sloped structures. A force bearing portion of the fluid dividing funnel can be pressed down, so two fluid exits of the fluid dividing funnel move towards these two sloped structures. The specimen drops and is guided into these two immunochromatographic carriers respectively. A reaction result can be observable. The fluid dividing funnel can divide the specimen into two immunochromatographic carriers evenly. The sloped structure can increase the accuracy of specimen supply. Excess specimen can be scraped off for enhancing the solving accuracy. In addition, it can decrease the possibility of false positive problem.

Abstract: Various embodiments may provide streaming service downlink assistance and/or uplink assistance mechanisms for a wireless device using attention (AT) commands exchanged between a modem processor of the wireless device and another processor of the wireless device. Various embodiments may include an AT command that is a bitrate recommendation action command including an indication of a stream identifier, an indication of a requested bitrate, and an indication of a direction. Various embodiments may include an AT response that is a bitrate recommendation response, the bitrate recommendation response including an indication of a stream identifier, an indication of a bitrate recommendation, and an indication of a direction.

Abstract: The present disclosure provides a method (200) in a network node for coordination of Configured Scheduling, CS, among a plurality of backhaul links. The method (200) includes, for each of the plurality of backhaul links: determining (210) at least one CS-related parameter; and transmitting (220) to a scheduling IAB node of that backhaul link the at least one CS-related parameter.

Abstract: A method for efficient separation and enrichment of lithium includes the following steps: pretreatment: diluting and filtering salina aged brine to obtain pretreated brine; separation: separating the pretreated brine via a nanofiltration separation system to obtain nanofiltration permeate and nanofiltration concentrate, wherein the operation pressure of the nanofiltration separation system is 1.0 MPa˜5.0 MPa; first concentration: carrying out first concentration on the nanofiltration permeate via a reverse osmosis system to obtain reverse osmosis concentrate and reverse osmosis permeate; and second concentration: carrying out second concentration on the reverse osmosis concentrate via an electrodialysis system to obtain electrodialysis concentrate and electrodialysis permeate, wherein the electrodialysis concentrate is a solution enriching lithium ions.

Abstract: A method for separation and enrichment of lithium includes the following steps: pretreatment: carrying out at least two dilutions and at least two filtrations on salina aged brine to obtain pretreated brine; separation: separating the pretreated brine via a nanofiltration separation system to obtain nanofiltration permeate and nanofiltration concentrate; first concentration: carrying out first concentration on the nanofiltration permeate via a reverse osmosis system to obtain reverse osmosis concentrate and reverse osmosis permeate; second concentration: carrying out second concentration on the reverse osmosis concentrate via an electrodialysis system to obtain electrodialysis concentrate and electrodialysis permeate, and the electrodialysis concentrate is solution enriching lithium ions.

Abstract: A joint control method with variable ZVS angles for dynamic efficiency optimization in a WPC system for EVs under ZVS conditions, including: adjusting a phase-shift duty cycle of a secondary active rectifier to control a charging voltage and a charging current of EV's batteries through a charging voltage closed loop and a charging current closed loop, respectively; adjusting a power angle of the secondary active rectifier to control a ZVS angle of the secondary active rectifier through a secondary ZVS angle closed loop; adjusting a phase-shift duty cycle of a primary inverter to control a ZVS angle of the primary inverter through the primary ZVS angle closed loop; determining the current operating case of the WPC system and adjusting the ZVS angles of the primary inverter and the secondary active rectifier to automatically identify an optimal operating point with a maximum charging efficiency through the P&O method.

Abstract: A voltage regulator dynamically adjusts the voltage distribution on a voltage rail based on multiple feedback measurements. The voltage regulator provides electrical power to a voltage rail at multiple power supply locations along the voltage rail. The voltage regulator obtains voltage measurements from multiple voltage sensing locations on the voltage rail and detects a spatially unequal voltage deviation in the voltage rail. The voltage regulator adjusts the electrical power provided to the voltage rail at each of the power supply locations to compensate for the spatially unequal voltage deviation in the voltage rail.

Abstract: A method for separation and enrichment of lithium includes the following steps: pretreatment: diluting and filtering salina aged brine to obtain pretreated brine; separation: separating the pretreated brine via a nanofiltration separation system to obtain nanofiltration permeate and nanofiltration concentrate; first concentration: carrying out first concentration on the nanofiltration permeate via a reverse osmosis system to obtain reverse osmosis concentrate and reverse osmosis permeate; second concentration: carrying out second concentration on the reverse osmosis concentrate via an electrodialysis system to obtain electrodialysis concentrate and electrodialysis permeate, and the electrodialysis concentrate is solution enriching lithium ions.

Abstract: The invention proposes a method of separating hemicellulose through efficient pretreatment of fibrous biomass materials. Fibrous biomass materials are first pretreated by the slurry method: the fibrous biomass materials are milled through ball mills and sieved to obtain fibrous biomass material powder, and the powder is mixed with water at room temperature to obtain slurry premixed solution of the fibrous biomass material powder. Through regulation and control of the reaction temperature, the time and the water amount, efficient hydrothermal removal of hemicellulose from the fibrous biomass material powder is realized. After the mixed solution is filtered, the filtrate is subject to gradient sedimentation to separate hemicellulose with low dispersity, and the sediment is then dried before storage. After the filter residue is mixed with polar aprotic solvent and water, and heated and stirred in a pressurized reactor, high-purity cellulose is obtained through filtering and separation.

Abstract: The disclosure describes a low-orbit satellite deorbit control method and system based on a particle swarm algorithm. The method includes: constructing an objective function according to a position parameter and a perturbation acceleration of each of particles in a particle swarm as well as a preset Lagrangian multiplier and a penalty factor; determining an objective fitness of each particle and a population fitness of the particle swarm based on the objective function, updating the position parameter and the velocity of each particle, and obtaining a population optimal fitness at a maximum number of iterations; updating the Lagrangian multiplier and the penalty factor according to the population optimal fitness, comparing the objective deviation value with a preset convergence condition, and determining an objective population fitness and an objective position parameter according to a comparison result to obtain an objective deorbit mode.

Abstract: The present invention discloses a quasi-zero-stiffness (QZS) based six-degree-of-freedom (6-DOF) absolute displacement and attitude measurement device. A lower end coil and an upper end coil are respectively charged with currents in the opposite directions; The electromagnetic field and the magnetic fields of an upper magnet and a lower magnet per se are mutually acted to produce an electromagnetic stiffness opposite to the stiffness of a spring. The stiffness of the whole leg is close to zero stiffness. When the to-be-measured platform generates space motion, the reference platform is in the stationary state. At this point, the deformation amounts of the six legs can be measured by laser displacement sensors. The six deformation amounts are respectively inputted into the displacement and attitude resolver, and by forward kinematic solution of the 6-DOF device, the displacement and the attitude of the to-be-measured platform can be obtained.