Abstract: The invention provides a method for regenerating a deNOX catalyst comprising contacting the catalyst with steam at a temperature in the range of from 250 to 390° C. The invention further provides a method of reducing the amount of nitrogen oxide components in a process gas stream comprising: a) contacting the process gas with a deNOX catalyst which results in the conversion of nitrogen oxide components as well as a decline in the NOX conversion over the deNOX catalyst; and b) regenerating the deNOX catalyst to improve the NOX conversion by contacting the deNOX catalyst with steam at a temperature in the range of from 250 to 390° C.

Abstract: A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. Further, a method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the second gas stream comprises at least 50% of the amount of dust in the first gas stream.

Abstract: A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. A method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the pressure drop of the foam catalyst bed increases by 300% or less relative to the initial pressure drop of the foam catalyst bed due to dust accumulation, measured under the same conditions is also described.

Abstract: A reactor for reducing the concentration of NO x in a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NOx; one or more catalyst beds comprising a ceramic or metallic foam with a NOx reduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

Abstract: A heater control module of the present disclosure controls exhaust temperature in an exhaust after treatment system. The heater control module includes a heating mode determination module and a heater operating module. The heating mode determination module is configured to select a desired heating mode from a plurality of heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The heater operating module is configured to operate an electric heater based on the desired heating mode. The plurality of modes includes at least a passive regeneration heating mode and an active regeneration heating mode. The electric heater is operated in the passive regeneration heating mode to heat an exhaust gas to a predetermined temperature to increase NO2 generation when an engine load is less than or equal to approximately 25%.

Abstract: A method of heating an exhaust gas in an exhaust after treatment system includes selecting a heating mode between a plurality of heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method further comprises heating the exhaust gas by operating the electric heater in the selected heating mode, and operating the electric heater in a passive regeneration heating mode to heat an exhaust gas to a predetermined temperature to increase NO2 generation when an engine load is less than or equal to approximately 25%.

Abstract: The present invention provides a method for processing a trunked service attribute, which includes: after a User Equipment (UE) enters a Radio Resource Control Connected (RRC_Connected) state and when a trunked called service is operated on the UE, informing, by the UE, a base station of a trunked service attribute.

Abstract: A transmission gate circuit includes a pass gate and a control circuit and provides High Voltage protection to a flash memory in a characterization mode and a low resistive path with true open-drain functionality in a normal mode. A native NMOSFET in series with the pass gate provides overvoltage protection for additional circuitry. Well biasing, gate tracking and internal node clamping circuits ensure that all of the devices of the pass gate and control circuit operated within safe operational voltage levels. The two modes of operation can be selected by an enable signal. The transmission gate circuit can support up to a 5.5 volts input in a true open drain mode while an input/output supply voltage of 3.3 volts is supplied.

Abstract: A method of heating an exhaust gas in an exhaust after treatment system includes selecting a heating mode between a plurality of heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method further comprises heating the exhaust gas by operating the electric heater in the selected heating mode, and operating the electric heater in a passive regeneration heating mode to heat an exhaust gas to a predetermined temperature to increase NO2 generation when an engine load is less than or equal to approximately 25%.

Abstract: A method of heating an exhaust gas in an exhaust aftertreatment system by selecting a heating mode between different heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method includes heating the exhaust gas by operating the electric heater in the selected heating mode and heating the exhaust gas to reduce an exhaust temperature gradient across the exhaust conduit.

Abstract: The application provides a method for processing a downlink control channel, including: in a downlink Transmit Time Interval (TTI), when a User Equipment (UE) of a group call in a cell has an individual service to be scheduled, a sender schedules a service of the group call within public space, by using a Group Radio Network Temporary Identifier (G-RNTI), and schedules the individual service within dedicated space by using a Cell Radio Network Temporary Identifier (C-RNTI); in the downlink TTI, when no UE in the group call of the cell has an individual service to be scheduled, the sender schedules the service of the group call within the dedicated space by using the G-RNTI.

Abstract: Embodiments of the present disclosure provide a method for implementing wireless coverage, including: transmitting, at a local cell and an adjacent cell, a point-to-multipoint service using a Transmission Mode (TM) with a User Equipment (UE) reference signal; wherein the UE reference signal is generated using a same Identity (ID) and position mapping is performed for the UE reference signal using the same ID; transmission of the point-to-multipoint service is scrambled using the same ID.

Abstract: The present disclosure provides a method for reporting a trunked service attribute. The method includes: when a trunked terminal is to report the trunked service attribute, the trunked terminal reports the trunked service attribute to a base station via the third message MSG3 during a contention based random access procedure or via the first uplink data/signaling packet after obtaining the trunked service attribute. Based on the same concept, the present disclosure also provides a method of receiving a trunked service attribute, and a corresponding trunked terminal, a corresponding base stations and a corresponding system.

Abstract: The present invention provides a method for processing a trunked service attribute, which includes: after a User Equipment (UE) enters a Radio Resource Control Connected (RRC_Connected) state and when a trunked called service is operated on the UE, informing, by the UE, a base station of a trunked service attribute.

Abstract: A transmission gate circuit includes a pass gate and a control circuit and provides High Voltage protection to a flash memory in a characterization mode and a low resistive path with true open-drain functionality in a normal mode. A native NMOSFET in series with the pass gate provides overvoltage protection for additional circuitry. Well biasing, gate tracking and internal node clamping circuits ensure that all of the devices of the pass gate and control circuit operated within safe operational voltage levels. The two modes of operation can be selected by an enable signal. The transmission gate circuit can support up to a 5.5 volts input in a true open drain mode while an input/output supply voltage of 3.3 volts is supplied.

Abstract: A voltage level shifter for high voltage applications has a low voltage domain current mirror having first and second branches. A high voltage switch and a resistor are connected in series with the second branch. An output stage provides an output signal that is a function of a voltage difference across the resistor, and the output stage and the resistor are in the high voltage domain. Assertion of an input signal in the low voltage domain develops a first current in the first branch, and causes the high voltage switch to pass in the resistor a second current from the second branch that is a function of the first current and develops the voltage difference across the resistor. Only the high voltage switch needs to have high breakdown voltage characteristics.

Abstract: A method and apparatus for allocating subcarriers in an orthogonal frequency division multiple access (OFDMA) system is described. In one embodiment, the method comprises allocating at least one diversity cluster of subcarriers to a first subscriber and allocating at least one coherence cluster to a second subscriber.

Abstract: A voltage level shifter for high voltage applications has a low voltage domain current mirror having first and second branches. A high voltage switch and a resistor are connected in series with the second branch. An output stage provides an output signal that is a function of a voltage difference across the resistor, and the output stage and the resistor are in the high voltage domain. Assertion of an input signal in the low voltage domain develops a first current in the first branch, and causes the high voltage switch to pass in the resistor a second current from the second branch that is a function of the first current and develops the voltage difference across the resistor. Only the high voltage switch needs to have high breakdown voltage characteristics.

Abstract: A method and apparatus for allocating subcarriers in an orthogonal frequency division multiple access (OFDMA) system is described. In one embodiment, the method comprises allocating at least one diversity cluster of subcarriers to a first subscriber and allocating at least one coherence cluster to a second subscriber.

Abstract: This disclosure relates to a method for controlling a system for regenerating a diesel particulate filter. The method includes monitoring an engine run time that has lapsed since a previous regeneration event. The method also includes monitoring backpressure behind the diesel particulate filter. The method further includes triggering a regeneration flag if the engine run time that lapsed since the previous regeneration event reaches a predetermined time limit and the backpressure exceeds a minimum value.