Abstract: Disclosed are a separator for fuel cells capable of minimizing the volume of a system and the use of sealants, and a stack for fuel cells, more particularly, a stack for solid oxide fuel cells, including the same. Specifically, by adding a metal sheet having a specific shape, position and size to the separator, the stress applied to the sealant can be uniformized, and thus the oxidizing agent and fuel can be separated and electrically isolated using only a piece of sealant. Therefore, the stack for fuel cells is characterized in that there is no variation in temperature, reactant concentration, power, or the like between respective unit cells, so delamination and microcracks do not occur, the volume is minimized, and the power density per unit volume is very high.

Abstract: Disclosed is a pharmaceutical composition and health food comprising herb extracts of one or more herbs selected from the group consisting of Puerariae Radix, Bombycis corpus and Araliae Continentalis Radix. The herb medicine of this invention comprising a single or mixed composition may be useful for the prevention and treatment of renal diseases as well as improvement of renal functions.

Abstract: An apparatus and method for deciding an adaptive noise level for bandwidth extension are provided. The apparatus includes a noise level decider for deciding a high-band noise level for bandwidth extension according to tonality of an input signal, a pitch frequency analyzer for detecting a pitch frequency of the input signal and analyzing correlation between the detected pitch frequency and a frequency channel, and a noise level controller for adaptively controlling the decided high-band noise level based on the analyzed correlation of the pitch frequency and the frequency channel.

Abstract: Disclosed is a pharmaceutical composition and health food comprising herb extracts of one or more herbs selected from the group consisting of Puerariae Radix, Bombycis corpus and Araliae Continentalis Radix. The herb medicine of this invention comprising a single or mixed composition may be useful for the prevention and treatment of renal diseases as well as improvement of renal functions.

Abstract: A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.

Abstract: This invention relates to a pharmaceutical composition and health food comprising herb extracts of one or more herbs selected from the group consisting of Puerariae Radix, Bombycis corpus and Araliae Continentalis Radix. The herb medicine of this invention comprising a single or mixed composition may be useful for the prevention and treatment of renal diseases as well as improvement of renal functions.

Abstract: An apparatus and method for deciding an adaptive noise level for bandwidth extension are provided. The apparatus includes a noise level decider for deciding a high-band noise level for bandwidth extension according to tonality of an input signal, a pitch frequency analyzer for detecting a pitch frequency of the input signal and analyzing correlation between the detected pitch frequency and a frequency channel, and a noise level controller for adaptively controlling the decided high-band noise level based on the analyzed correlation of the pitch frequency and the frequency channel.

Abstract: An apparatus and method provide MAC logic enabling the use of two or more reverse link rate controls at the same time in one or more sectors of a radio base station. That enables the base station to control reverse link loading via reverse link rate control, while assigning mobile stations to the type of reverse link rate control best suited to their needs. For example, the base station MAC logic may implement both a common rate controller that generates per-sector rate control commands, and a dedicated rate controller that generates per-user rate control commands and assign mobile stations having relatively lax reverse link service needs to the common rate controller, while assigning mobile stations having more demanding reverse link service requirements to the dedicated rate control. More than two rate controls can be implemented, and exemplary choices include per-user, per-sector, per-group, and scheduled rate control in any combination.

Abstract: A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.

Abstract: A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.

Abstract: An apparatus and method reduce transmit power fluctuations in a wireless communication network. In one embodiment, a base station transmitter transmits communication signals as needed, e.g., overhead channel signals, dedicated traffic channel signals, etc., at whatever combined power level is required for such signals. Where the combined transmit power for the communication signals falls below a target level, the transmitter transmits additional power via one or more null signals, e.g., signals not intended for use by any receiving station, at whatever transmit power is needed to make up the difference and thereby maintain the total transmit power substantially at the target level. For example, the transmitter may transmit a shared packet data channel signal with either null data or user data, depending on whether user data is available for any station sharing the channel, and thereby avoid power fluctuations that would arise from intermittent transmission of the shared signal.

Abstract: A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.

Abstract: An apparatus and method provide MAC logic enabling the use of two or more reverse link rate controls at the same time in one or more sectors of a radio base station. That enables the base station to control reverse link loading via reverse link rate control, while assigning mobile stations to the type of reverse link rate control best suited to their needs. For example, the base station MAC logic may implement both a common rate controller that generates per-sector rate control commands, and a dedicated rate controller that generates per-user rate control commands and assign mobile stations having relatively lax reverse link service needs to the common rate controller, while assigning mobile stations having more demanding reverse link service requirements to the dedicated rate control. More than two rate controls can be implemented, and exemplary choices include per-user, per-sector, per-group, and scheduled rate control in any combination.

Abstract: A call recovery method uses a multiple access forward call recovery channel to perform simultaneous rescues for multiple mobile stations. Rescue messages, such as handoff direction messages, for different mobile stations are multiplexed onto the call recovery channel for transmission to mobile stations in need of rescue.

Abstract: By using portions of their reverse pilot signals, mobile stations report relevant state information to supporting radio base stations (RBSs) such that reverse link scheduling decisions may be made quickly at the RBS level rather than by an associated base station controller. Moving reverse link scheduling to the RBS level greatly increases the speed of scheduling decisions, such that a wireless network gains efficiency through greater scheduling responsiveness. In exemplary embodiments, “pilot stealing” for state information transmission is balanced against the network's need for unmodulated pilot signals from the mobile stations to use in channel estimation operations and carrier synchronization. “Stolen” portions of a given mobile station's pilot signal may be used to indicate that, for example, the mobile station has data to send, and that it can increase its reverse data rate.

Abstract: A mobile terminal for CDMA systems has multiple operating states including an active state and a control hold state. In the active state the mobile terminal transmits an pilot signal on a pilot channel and rate control information on a reverse rate control channel. In the active state a sector selection code is applied to the reverse rate control channel to indicate selection of a serving base station for forward link communications. In the control hold state, the mobile terminal transmits a pilot signal covered by a sector selection code. The pilot signal may be gated, i.e., transmitted at a reduced duty cycle, in the control hold mode. The pilot signal may be transmitted on either the reverse pilot channel or the reverse rate control channel. Transmission on the other channel is suspended in the control hold state.

Abstract: A method and apparatus for link supervision determines whether a link signal is present or absent by measuring received energy for that signal. If the measured energy for the signal does not meet a defined energy threshold according to defined evaluation criteria, such as a sufficiency metric, the signal is deemed absent. Applied to wireless communication networks, such supervision may be used to suspend or terminate transmission responsive to detecting the link signal's absence. In an exemplary embodiment for 1×EV-DV (cdma2000 Revision C) wireless networks, a mobile station selectively performs forward link supervision based on measuring the bit energy of power control bits received by the mobile on a dedicated power control sub-channel. If a fundicated channel is assigned to the mobile station, it may perform forward link supervision based on Frame Error Rate (FER) estimations for data received on the fundicated channel rather than the energy-based approach.

Abstract: An object based video information coding apparatus and method for an MPEG-4 system compresses image data without reducing image quality by converting motion-incompensable objects using image data blocks. The method includes the steps of i) separating moving and non-moving background imagery from an input image; ii) selecting motion-compensable objects and motion-incompensable objects from the moving imagery; iii) separating motion information and shape information from motion-compensable objects; iv) separating shape information and image information for motion-incompensable objects; v) dividing motion-incompensable object into N.times.N blocks; vi) discrete cosine transforming pixels in the N.times.N blocks using an N.times.N discrete cosine transform. In one embodiment, the pixels of the motion-incompensable object not in the N.times.N blocks are differential pulse code modulated. In another embodiment, the motion-incompensable object is first divided into 8.times.8 blocks.

Abstract: An object based background information coding apparatus and method for an MPEG-4 system codes background images for effectively compressing image data corresponding to an MPEG-4 profile and for compensating the background information without errors.