etho

Method for storing and transporting products and a low pressure storage device therefor

A method for storing and transporting products in a low-pressure storage device and a low-pressure storage device therefore, to allow product storage in a simple manner, and to control the storage in a simple manner. The products transfer on a first storage path and on a second storage path that is arranged directly next to the first storage path, during the storage operation of the storage device.




etho

Apparatus and methods for assisting in controlling the discharge of material onto a conveyor from a dispenser

In some embodiments, apparatus useful for assisting in controlling the discharge of material onto a conveyor from a material dispenser includes a carrier, first and second side restrictors extending downwardly from the carrier and at least one wiper extending downwardly from the carrier and transverse to the side restrictors. The side restrictors are configured to assist in preventing at least some material from overflowing off the sides of the conveyor, while the wiper is configured to level the top of at least some of the material dispensed on the conveyor.




etho

Door transportation method in vehicle body assembly line and door transportation device in vehicle body assembly line

A door transportation method in a vehicle body assembly line, in which the vehicle body is placed and transported on a vehicle body transportation carriage of a floor conveyer, and thereby components are assembled to the vehicle body, includes: placing and transporting the door, which is detached from the vehicle body, on a door placing section arranged on a base stand of the vehicle body transportation carriage.




etho

Element of a modular scaffolding system and method for its manufacture

In a method for manufacturing an element (8) of a modular scaffolding system, an at least partly galvanized pipe part (10) having a first end (12) and a second end is provided, together with an at least partly galvanized first connection head (40) which is designed to be connected to the first end (12) of the pipe part (10). A weld (24), which connects the first end (12) of the pipe part (10) to the first connection head (40), has an internal weld surface (24b) and an external weld surface (24a). The internal weld surface is proximal to the pipe part (10) and/or the connection head (40), and the external weld surface is proximal to an outside environment (60) of the pipe part (10) and the connecting head (40). A protective layer covers the external weld surface, such that it is screened off from the outside environment (60).




etho

System and method for analyzing suspicious network data

A system is provided with a controller and a device configured to receive and output network data from a communication network to the controller. Accordingly, the controller is configured to (i) receive the network data from the device, (ii) conduct heuristic analysis on the network data, (iii) identify at least a portion of the network data as suspicious upon determining by the heuristic analysis of a likelihood that at least the portion of the network data including malware, (iv) simulate transmission of the suspicious network data to at least one virtual machine of a plurality of virtual machines that is selected or configured using at least one software profile, and (v) analyze effects of the suspicious network data on the at least one virtual machine.




etho

Fall protection systems and methods

Fall protection systems, methods of installing such systems, and buildings embodying such systems. Such fall protection system extends from structure elements of the building about an encompassed space into which there is risk of a person falling. An open-mesh web is supported from the structure elements and overlies, and extends across, the space. A perimeter band extends about the encompassed space. The perimeter band is secured to the building structure elements about the space and thus entraps the web between the band and the building structure elements. The web may also be supported in the space by supplemental supports, which can be crossing support bands, attached to the structure elements, or intervening e.g. walls within the space. The web is left in place and is covered by internal finish materials whereby the web is captured between internal finish materials and ceiling and/or floor members in the finished building.




etho

Ladders, ladder components, ladder accessories, ladder systems and related methods

Various embodiments of ladders, ladder components, accessories for ladders, ladder systems and related methods are provided. In one embodiment a ladder and platform system is provided having at least two ladders and a platform or plank. The platform or plank has coupling mechanisms that provide adjustable but secure coupling of the platform to the ladders, either with the top cap or with the rungs. Other embodiments include storage devices and paint trays for use with ladders and ladder systems incorporating such devices.




etho

Stepladder with latch stud and method

A stepladder includes a front section having a first front leg and a second front leg and a step attached to the first front leg and the second front leg and a latch engaged with the step. The stepladder includes a rear section having a first rear leg and a second rear leg and a cross bar attached to the first rear leg and the second rear leg. The rear section has a first stud which extends from the first rear leg toward the second rear leg and separate and apart and not in contact with the second rear leg and not in contact with the cross bar. The latch is engaged with and latched to the first stud to define an engaged position where the first front leg and the first rear leg are in an open position and form an inverted v shape and are prevented from folding together.




etho

Apparatus and method for extinguishing fires in a multi-floored building

An improved apparatus for treating a fire in a multi-floored building where the fire is located on an upper floor vertically displaced from a lower floor from which the fire is treated, and where the upper and lower floors each have a selectively openable environmental access along an external wall of the multi-floored building. The improved apparatus includes a tubular structure having an inlet, an intermediate portion, and an outlet and a bracing system. The bracing system has a frame, a first pivot point, and a second pivot point. The frame provides support against a sturdy surface. The tubular structure is supported on the first pivot point and rotates thereon to elevate or hoist the outlet towards the upper floor environmental access. The tubular structure is further supported on a second pivot point and further rotates thereon to elevate the outlet.




etho

Ladder access system and method for using same

Embodiments of the disclosure may provide a ladder access system. The ladder access system may include a base having a clamp disposed proximal an excavation end thereof. The clamp may be configured to secure the base to an excavation support structure. A first side rail may be disposed on a first side of the base and a second side rail may be disposed on a second side of the base. The ladder access system may also include a gate disposed at a surface end of the base and extending between the first and second side rails. The ladder access system may further include a ladder support disposed proximal the excavation end of the base and extending from the first or second side rail, the ladder support being configured to uphold an upper end of a ladder disposed in an excavation and leaning thereupon.




etho

Method for tethering a person to the hull of a vessel

A tether device includes a magnetic base; a pole having a first end attached to the magnetic base; and a connector or clip attached at a second end of the pole, for removably connecting the tethering device to a user. Also, a method for tethering a user to a hull of a vessel including the steps of providing a tether device having a magnetic base, a pole having a first end attached to the magnetic base, and a connector or clip attached at a second end of the pole; connecting the connector or clip to the user; and engaging the magnetic base with the hull of the vessel.




etho

Ladders, ladder components and related methods

Ladders, ladder components and related methods are provided including various embodiments of a combination ladder. In some embodiments, a platform is provided that is fixedly coupled with a rail assembly of a combination ladder. The platform may pivot between a useable position or state and a stowed or stored position or state. The platform may maintain a position relative to certain rungs of the rail assembly while being displaceable relative to other rungs of the rail assembly. A hand rail may be coupled to the rail assembly and a tray may be coupled with the hand rail. The tray and the platform may be configured to maintain a constant distance between one another while the rail assembly is adjusted for height.




etho

Method and system for engine dilution control

Methods and systems are provided for enabling engine dilution control. One or more engine diluents are combined to provide a desired engine dilution, the various diluents selected based on their respective combustion stability limits. A ratio of the various diluents used is further adjusted based on engine operating limitations.




etho

Split-cycle, reactivity controlled compression ignition engine and method

An internal combustion engine includes a first cylinder having an intake valve in fluid communication with an intake manifold, and a second cylinder having an exhaust valve in fluid communication with an exhaust manifold. A transfer passage fluidly connects the first cylinder with the second cylinder. A first fuel injector is configured to provide a first fuel to the first cylinder, and a second fuel injector is configured to provide a second fuel to the second cylinder. The first cylinder operates, at times, to push a first air/fuel mixture through the transfer passage into the second cylinder. The second fuel injector is configured to provide at least one fuel injection plume into the first air/fuel mixture.




etho

Method for controlling a micro-hybrid system

A method of controlling a vehicle associated micro-hybrid system. The system includes a reversible rotary electrical machine that is connected to a thermal engine of a motor vehicle. The method includes: controlling a step of pre-fluxing of a rotor of the reversible rotary electrical machine when a control module receives an instruction to start the thermal engine via the reversible rotary electrical machine; measuring a speed of the rotor of the reversible rotary electrical machine; and, demanding stoppage of the pre-fluxing step when the speed of the rotor is greater than or equal to a predetermined speed threshold value. The method avoids the generation of overvoltages in an electrical distribution network formed by an onboard network of the vehicle and by an energy storage unit of the micro-hybrid system.




etho

Method and system for pre-ignition control

Methods and systems are provided for addressing pre-ignition that may be induced in response to actions taken to mitigate a cylinder misfire. An amount of engine load limiting applied may be adjusted to reduce the likelihood pre-ignition while also addressing component over-temperature issues. By limiting an engine load while shutting off fuel in a misfiring cylinder, and while combusting a lean air-fuel mixture in the remaining cylinders, pre-ignition induced by the misfire-mitigating lean combustion conditions can be reduced.




etho

Fuel injection adapters and related systems and methods

A fuel injection adapter can include a primary cavity into which a primary fuel injector can be received and a secondary cavity into which a secondary fuel injector can be received. A channel can provide fluid communication between the primary and secondary cavity, and the primary cavity can be in fluid communication with an outlet of the fuel injection adapter.




etho

Fuel feed device and method for producing a fuel feed device

A fuel feed device for attachment to a cylinder head of an internal combustion engine has at least one fuel distribution element extending along a longitudinal direction, and at least one connecting element extending transversely to the longitudinal direction, wherein the connecting element can be used to connect the fuel distribution element to the cylinder head. The fuel feed device further includes at least one reinforcing element which is connected, on one hand, to an outer surface of the fuel distribution element and, on the other hand, to the connecting element outside the fuel distribution element.




etho

Purge valve noise attenuation system and method

A vapor purge valve in an engine is provided. The vapor purge valve includes a purge valve inlet, a purge valve outlet, and a muffler including a housing at least partially enclosing a diffuser in fluidic communication with the purge valve inlet and the purge valve outlet.




etho

Air cooler and method for operation of an air cooler

An air cooler line is provided. The air cooler lines includes a first air cooler having a plurality of air flow conduits, each of the air flow conduits including an inlet, and a first air flow deflector extending across peripheral portions of the inlets and fixedly coupled to the air flow conduits and a second air cooler having a plurality of air flow conduits, each of the air flow conduits including an inlet, and a second air flow deflector extending across peripheral portions of the inlets and fixedly coupled to the air flow conduits, the second air flow deflector differing in at least one of size and geometry than the first air flow deflector.




etho

Internal combustion engine with intake air heating, and method for operating an internal combustion engine of said type

Embodiments for an engine system are provided. One example internal combustion engine having at least one cylinder head and at least two cylinders, in which each cylinder has at least one inlet opening for the supply of combustion air into the cylinder, comprises an intake line leading to each inlet opening, an overall intake line where the intake lines of at least two cylinders merge, such that a distributor junction point is formed, and a heating device arranged in the overall intake line which has at least one strip-like heating element, a first narrow side of a cross section of which faces toward intake combustion air flow, wherein the heating device is arranged adjacent to the distributor junction point at which the intake lines merge to form the overall intake line, a spacing between the heating device and the distributor junction point being smaller than the diameter of a cylinder.




etho

Methods and systems for model-based control of gas turbines

Embodiments of systems and methods for tuning a turbine are provided. In one embodiment, a method may include receiving at least one of a measured operating parameter or a modeled operating parameter of a turbine during operation; and tuning the turbine during operation. The turbine may be tuned during operation by applying the measured operating parameter or modeled operating parameter or parameters to at least one operational boundary model, applying the measured operating parameter or modeled operating parameter or parameters to at least one scheduling algorithm, comparing the output of the operational boundary model or models to the output of the scheduling algorithm or algorithms to determine at least one error term, and closing loop on the one error term or terms by adjusting at least one turbine control effector during operation of the turbine.




etho

Air-fuel ratio variation abnormality detecting device and air-fuel ratio variation abnormality detecting method

In an engine having a plurality of cylinders in which a plurality of fuel injection valves are provided respectively, fuel is injected at a predetermined injection ratio, and an abnormality of air-fuel ratio variation is detected. If a fuel injection amount of at least one of the plurality of the fuel injection valves is smaller than a predetermined reference value, the fuel injection amount is increased so as to become equal to or larger than the reference value.




etho

Method and system for pre-ignition control

Methods and systems are provided for reducing late burn induced cylinder pre-ignition events. Forced entry of residuals from a late burning cylinder into a neighboring cylinder may be detected based on engine block vibrations sensed in a window during an open exhaust valve of the late burning cylinder. In response to the entry of residuals, a pre-ignition mitigating action, such as fuel enrichment or deactivation, is performed in the neighboring cylinder.




etho

Method for operating a pressure ignition engine

Method and system for operating a compression engine on ether containing fuel obtained by conversion of a primary fuel based on alcohol comprising the steps and means for: (a) continuously withdrawing the primary fuel based on alcohol from a fuel tank and pressurising the primary fuel based on alcohol in its liquid form to a final engine injection pressure; (b) continuously introducing the pressurized primary fuel based on alcohol into a fuel accumulation chamber; (c) continuously distributing the pressurized primary fuel based on alcohol into pipes connecting the accumulation chamber with fuel injectors of the engine; (d) prior to the fuel injectors continuously converting the pressurised primary fuel based on alcohol to an ether containing fuel by contact with an alcohol dehydration catalyst being arranged in each of the pipes upstream the fuel injectors; (e) continuously injecting the ether containing fuel at injection pressure into the engine; and (f) continuously withdrawing a part of the introduced primary fuel based on alcohol from the accumulation chamber; and (g) depressurising and recycling the withdrawn primary fuel based on alcohol to the fuel tank.




etho

Valve timing adjusting device, apparatus for manufacturing same and method for manufacturing same

A valve timing adjusting device for and engine includes a sprocket configured to rotate by receiving drive power from a driving shaft, a vane rotor fixed to a driven shaft so as to be rotatable relative to the sprocket, a housing that includes an oil chamber housing the vane rotor and is fixed to one end in a thickness direction of the sprocket, a bolt fixing the sprocket to the housing, and a knock pin inserted into a sprocket hole formed in the sprocket at one end thereof and into a housing hole formed in the housing at the other end thereof to restrict relative relation between the sprocket and the housing. The knock pin abuts against an inner wall of the sprocket hole at one end thereof, and abuts against an inner wall of the housing hole at the other end thereof.




etho

NONVOLATILE MEMORY DEVICE AND METHOD OF PROGRAMMING THE SAME

A nonvolatile memory device is provided as follows. A memory cell array includes a plurality of memory cells. An address decoder provides a first verify voltage to selected memory cells among the plurality of memory cells in a first program loop and provides a second verify voltage to the selected memory cells in a second program loop. A control logic determines the second program loop as a verify voltage offset point in which the first verify voltage is changed to the second verify voltage based on a result of a verify operation of the first program loop.




etho

ONE TIME PROGRAMMABLE NON-VOLATILE MEMORY AND READ SENSING METHOD THEREOF

A read sensing method for an OTP non-volatile memory is provided. The memory array is connected with plural bit lines. Firstly, a selected memory cell of the memory array is determined, wherein one of the plural bit lines connected with the selected memory cell is a selected bit line and the other bit lines are unselected bit lines. Then, the unselected bit lines are precharged to a precharge voltage. Then, the selected bit line is connected with the data line, and the data line is discharged to a reset voltage. After a cell current from the selected memory cell is received, a voltage level of the data line is gradually changed from the reset voltage. According to at least one result of comparing a voltage level of the data line with a comparing voltage, an output signal is generated.




etho

TEST METHOD OF SEMICONDUCTOR DEVICE

The semiconductor device includes a bit line, a transistor, a retention node, and a capacitor. The transistor has a function of charging or discharging the retention node. The capacitor has a function of retaining a potential of the retention node. A voltage greater than the sum of a writing voltage and a threshold voltage is applied to a gate of the transistor. When the transistor is turned on, a first potential is supplied to the bit line with a reference potential in a floating state. A voltage less than the sum of the writing voltage and the threshold voltage is applied to the gate of the transistor. When the transistor is turned on, a second potential is supplied to the bit line with a reference potential in a floating state. With use of the first and second potentials, the threshold voltage of the transistor is calculated without being influenced by parasitic capacitance and variations in the storage capacitance of the capacitor.




etho

MEMORY DEVICE COMMAND RECEIVING AND DECODING METHODS

Systems, devices and methods are disclosed. In an embodiment of one such method, a method of decoding received command signals, the method comprises decoding the received command signals in combination with a signal provided to a memory address node at a first clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge of the clock signal, represent a memory command. Furthermore, the signal provided to the memory address node at a second clock edge of the clock signal is not decoded in combination with the received command signals. The memory command may be a reduced power command and/or a no operation command.




etho

SEMICONDUCTOR MEMORY DEVICE FOR PERFORMING REFRESH OPERATION AND OPERATING METHOD THEROF

A semiconductor memory device may include: a memory bank comprising a plurality of word lines; a smart command generation unit suitable for generating a smart refresh command, which is enabled at a random cycle, in response to an active command; and a refresh operation control unit suitable for performing a refresh operation to at least one of adjacent word lines of a target word line among the plurality of word lines in response to the smart refresh command.




etho

ELECTRONIC DEVICE AND METHOD FOR DRIVING THE SAME

An electronic device includes a semiconductor memory that includes: a memory cell coupled between a first line and a second line; a first selection block configured to select the first line; a second selection block configured to select the second line; an alternate current supply block configured to supply, during a read operation, an alternate current corresponding to a resistance state of the memory cell; and a sensing block configured to sense, during the read operation, at least one of a cell current flowing through the memory cell and the alternate current.




etho

TRANSIENT CURRENT-PROTECTED THRESHOLD SWITCHING DEVICES SYSTEMS AND METHODS

Threshold switching devices demonstrating transient current protection through both insulation and repair current mechanisms, including associated systems and methods, are provided and discussed.




etho

APPARATUSES AND METHODS OF READING MEMORY CELLS

A method is provided for a reading memory even if there is a threshold voltage in an overlapped threshold voltage (VTH) region between a first state distribution and a second state distribution. The method includes ramping a bias on a memory cell a first time to determine a first threshold voltage (VTH1) of the memory cell and determining whether the VTH1 is within the overlapped VTH region. Upon determination that the memory cell is within the overlapped VTH region, the method further includes applying a write pulse to the memory cell; ramping a bias on the memory cell a second time to determine a second threshold voltage (VTH2); and determining the state of the memory cell prior to receiving the write pulse based on a comparison between the VTH1 and the VTH2.




etho

OPERATING METHOD OF A NONVOLATILE MEMORY DEVICE

A method of operating a nonvolatile memory device includes: first programming a target transistor of a cell string of the nonvolatile memory device, wherein the target transistor has a first threshold voltage distribution after the first programming, and wherein the cell string includes a plurality of transistors; and second programming the target transistor of the cell string, wherein the first transistor has a second threshold voltage distribution after the second programming, wherein a width of the second threshold voltage distribution is less than a width of the first threshold voltage distribution.




etho

METHOD OF SHAPING A STROBE SIGNAL, A DATA STORAGE SYSTEM AND STROBE SIGNAL SHAPING DEVICE

A strobe signal shaping method for a data storage system includes receiving a strobe signal; boosting a first clock edge portion of the strobe signal when the strobe signal is received after having been idle or paused over a predetermined time period; and returning to an operating mode in which boosting is turned off with respect to a second clock edge portion of the strobe signal.




etho

MEMORY SYSTEM PERFORMING WEAR LEVELING USING AVERAGE ERASE COUNT VALUE AND OPERATING METHOD THEREOF

A memory system may include a memory device including 0th to N-1th memory blocks, wherein N is a positive integer; and a controller having a first list and a second list, wherein the first list includes 0th to N-1th erase count values respectively for the 0th to N-1th memory blocks, wherein the second list includes 0th to N-1th difference values respectively for the 0th to N-1th memory blocks, wherein each of the 0th to N-1th difference values is a difference between an average value of the 0th to N-1th erase count values and each of the 0th to N-1th erase count values, wherein the controller selects a source block and a target block among the 0th to N-1th memory blocks depending on the 0th to N-th erase count values included in the first list and the 0th to N-1th difference values included in the second list to perform a wear leveling between the source block and the target block.




etho

SEMICONDUCTOR MEMORY DEVICES AND METHODS OF TESTING OPEN FAILURES THEREOF

Semiconductor memory devices are provided. The semiconductor memory device includes an input/output (I/O) drive controller, a data I/O unit and a data transmitter. The input/output (I/O) drive controller generates drive control signals and an input control signal for driving first and second global I/O lines in a first test mode or a second test mode. The data I/O unit drives the first global I/O line in response to an input data when a write operation is executed in the first test mode and to drive the first and second global I/O lines in response to the drive control signals when the write operation is executed in the second test mode. The data transmitter transfers the data on the first global I/O line onto first and second local I/O lines to store the data on the first global I/O line in a memory cell array portion when the write operation is executed in the first test mode. The data transmitter also transfers the data on the first and second global I/O lines onto the first and second local I/O lines to store the data on the first and second global I/O lines in the memory cell array portion when the write operation is executed in the second test mode. Related methods are also provided.




etho

METHOD FOR FABRICATING SEMICONDUCTOR DEVICE AND METHOD FOR OPERATING THE SAME

A method for fabricating a semiconductor device and a method for operating the semiconductor device are provided. The method for fabricating a semiconductor device includes forming a first electrode layer; forming a material layer, including conductive path components, over the first electrode layer; forming a second electrode layer over the material layer; performing a forming operation, which includes initially creating, in the material layer, a conductive path that electrically connects the first electrode layer to the second electrode layer by applying one of a predetermined voltage and a predetermined current between the first and second electrode layers, the conductive path including the conductive path components; and performing a first heat-treatment process at a predetermined temperature that removes some of the conductive path components from the conductive path, wherein a resistance state of the material layer changes based on the creation or dissolution of the conductive paths.




etho

METHOD AND APPARATUS FOR SHIFTING CONTROL AREAS IN A WIRELESS COMMUNICATION SYSTEM

An apparatus for assigning a plurality of access nodes of a wireless communication network to control areas includes a processing apparatus. The processing apparatus is configured to assign each access node in the plurality of access nodes to a control area of a plurality of control areas and to determine a first control phase. The first control phase is a period of time during which the assignment of access nodes to control areas remains constant. The processing apparatus is configured to, when changing from the first control phase to a following second control phase, reassign at least a subset of access nodes which were assigned during the first control phase to a first control area to a second control area and reassign at least a subset of access nodes which were assigned during the first control phase to a third control area to the first control area.




etho

UPLINK DATA TRANSMISSION METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

A method for transmitting uplink (UL) data requiring low latency in a wireless communication system according to the present invention, the method performed by a user equipment comprises transmitting contention PUSCH resource block (CPRB) indication information used for identifying a particular UE and/or particular data to an eNB; transmitting UL data to the eNB through CPRB resources of a contention based PUSCH (CP) zone; and receiving a hybrid automatic retransmit request (HARQ) response with respect to the UL data from the eNB through a physical hybrid ARQ indicator channel (PHICH).




etho

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK BANDWIDTH ALLOCATION

Methods and apparatus for multiple user uplink are provided. In one aspect, method for wireless communication includes receiving an assignment of a frequency bandwidth for an uplink transmission of a station. The method further includes determining whether a portion of the assigned frequency bandwidth is unavailable for the uplink transmission. The method further includes selectively transmitting the uplink transmission based on whether the portion of the assigned frequency bandwidth is unavailable.




etho

VDC Resource Request Method, User Equipment, and Base Station

A VDC resource request method, user equipment, and a base station, where the VDC resource request method includes sending, by user equipment, a VDC resource request message to a base station when the user equipment needs to request a VDC resource for sending vehicle service information, where the VDC resource request message includes at least one piece of the following information: a VDC resource status list, or travel information of the user equipment, and an available VDC resource is indicated in the VDC resource status list, receiving a VDC resource allocation indication message from the base station, and sending the vehicle service information by using the VDC resource indicated by the VDC resource allocation indication message.




etho

DATA COMMUNICATION METHOD, COMMUNICATION SYSTEM AND MOBILE TERMINAL

In a communications system which complies with LTE including a base station which transmits data by using an OFDM (Orthogonal Frequency Division Multiplexing) method as a downlink access method, and a mobile terminal, in a case in which an uplink scheduling request signal is transmitted by using an S-RACH when an Ack/Nack signal is being transmitted by using an Ack/Nack exclusive channel, the transmission of the Ack/Nack signal is stopped while the uplink scheduling request signal is transmitted.




etho

COMMUNICATION DEVICE AND A METHOD THEREIN FOR TRANSMITTING DATA INFORMATION AT FIXED TIME INSTANTS IN A RADIO COMMUNICATIONS NETWORK

A first communication device and method therein for transmitting data information at fixed time instants on a radio channel to a second communication device in a radio communications network. First, the first communication device determines that the radio channel is available for transmitting data information to the second communication device during a time period determined by the first communication device. Then, the first communication device transmits a preamble on the available radio channel after the time period. The first communication device thereafter transmits the data information on the available radio channel to the second communication device at a next fixed time instant following the transmission of the preamble.




etho

Method, Apparatus, Server, and Systems of Time-Reversal Technology

A time-reversal wireless system comprising a first wireless transceiver of a time-reversal client, one or more second wireless transceiver and/or a time-reversal client with the first wireless transceiver. The first wireless transceiver of the time-reversal client is wirelessly coupled to the one or more second wireless transceiver through a wireless broadband multipath channel associated with a space. The time-reversal client contains the first wireless transceiver. The time-reversal client also contains a processor and a memory configured to obtain a set of channel state information (CSI) in a channel probing phase, and/or to obtain a set of location-specific signatures based on the set of CSI and/or a time reversal operation in a channel probing phase. The set of CSI is captured when one or more probing signal is sent either from the first wireless transceiver to each of the at least one second wireless transceiver, or from each of the at least one second wireless transceiver to the first wireless transceiver, through the wireless broadband multipath channel associated with the space. A channel passband with bandwidth W0 is associated with the wireless broadband multipath channel. A first passband with bandwidth W1 is associated with the first wireless transceiver. The W1 is not larger than W0 such that the first passband is part of the channel passband. One or more second passband is associated with the one or more second wireless transceiver such that a bandwidth W2 associated with each of the one or more second passband is not larger than W1 such that the each of the one or more second passband is part of the first passband. Each of the set of CSI include a channel impulse response, a channel frequency response, and/or another channel state data of the wireless broadband multipath channel.




etho

APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN COMMUNICATION SYSTEM

A data transmission apparatus in a communication system includes a reception unit configured to receive terminal information from a plurality of terminals through a new frequency band for transmission and reception of data between the plurality of terminals and an AP (access point); a determination unit configured to determine access timing of the terminals to the AP by using the terminal information, and generate terminal access information including information on the access timing; and a transmission unit configured to transmit the terminal access information and beacon frames to the terminals, wherein the terminals access the AP and transmit data frames to the AP, at the access timing based on the beacon frames.




etho

METHOD FOR TRANSMITTING AND RECEIVING FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM AND APPARATUS FOR THE SAME

Disclosed are a method for transmitting and receiving a frame in a wireless local area network (WLAN) system and an apparatus for the same. A method for generating interference/non-interference station lists includes receiving a first frame from a second station, acquiring a receiver address of the first frame from the first frame, and setting, based on whether to receive a second frame that is a response to the first frame from a third station indicated by the receiver address within a preset time from a time when the first frame has been received, the third station as an interference station or a non-interference station. Therefore, the performance of a communication system may be improved.




etho

METHOD AND APPARATUS FOR GENERATING CODEWORD, AND METHOD AND APPARATUS FOR RECOVERING CODEWORD

Disclosed are a method and an apparatus for generating a codeword, and a method and an apparatus for recovering a codeword. An encoder calculates the number of punctured symbol nodes among symbol nodes included in a codeword, punctures symbol nodes located at even or odd number positions among the symbol nodes included in the codeword, calculates the number of symbol nodes which need to be additionally punctured on the basis of the calculated number of the symbol nodes to be punctured, classifies the symbol nodes, which need to be additionally punctured, into one or more punctured node groups on the basis of the calculated number of symbol nodes which need to be punctured, determines the locations on the codeword where the one or more punctured node groups are to be arranged, and punctures the symbol nodes included in the codeword which belong to the punctured node groups according to the determined locations. A transmission unit transmits the codeword.




etho

APPARATUS, SYSTEM AND METHOD FOR THE TRANSMISSION OF DATA WITH DIFFERENT QoS ATTRIBUTES

An apparatus, system and method are provided for transmitting data from logical channel queues over a telecommunications link, each of the logical channel queues capable of being associated with quality of service attributes, the method including determining available resources for transmission over the telecommunications link in a frame; selecting one of the logical channel queues based on a first one of the quality of service attributes; packaging data from the selected one of the logical channel queues until one of: a second one of the quality of service attributes for the selected one of the logical channel queues is satisfied, the available resources are used, or the selected one of the logical channel queues is empty; and repeating the selecting step and the packaging step for remaining ones of the logical channel queues.