Abstract: A first infrastructure system device other than a mobile station generates key material and forwards the key material to a second infrastructure system device other than a mobile station. A determination is made as to whether a mobile station for which the key material is directed is active on the system, and if so the key material is forwarded to a base station where the mobile station is active. The base station forwards the key material to the mobile station.

Abstract: A method for removing periodic noise pulses from a continuous audio signal generated in a pressurized air delivery system includes the steps of: detecting, in a time-windowed segment of the continuous audio signal generated in the pressurized air delivery system, a plurality of the periodic noise pulses having a pulse period and being representable in the form of a plurality of signal components combined by convolution; deconvolving the plurality of signal components to generate a plurality of deconvolved signal components; and removing at least a portion of the periodic noise pulses from the time-windowed segment of the continuous audio signal using the deconvolved signal components.

Abstract: A method and system of enabling dynamic configuration of mobility configuration parameters for a mobile entity (105) by a mobility configuration agent (120) may be implemented, wherein the assigned mobility configuration parameters for the mobile entity are based on mobility configuration parameters corresponding to a group to which the mobile entity (120) belongs. An SLP directory (445) may be used to allocate an optimal home agent to the mobile entity.

Abstract: A method for informing mobile stations of a control channel architecture for a wireless communications system is disclosed. At a controller in the wireless communications system, the controller sends a control channel architecture message on a broadcast channel. The control channel architecture message informs the mobile station of a control channel architecture for the wireless communications system. At a mobile station in the wireless communications system, the mobile station receives a control channel architecture message on a broadcast channel, retrieves information relating to the control channel architecture from the received control channel architecture message, and performs control channel processing using the retrieved information.

Abstract: A controller (105) registers (205) a first number of channels; registers (210) a first number of clients (125); determines (215) a set of client groups a set of client groups and categorizing the registered clients into the client groups; and for each client group in the set, assigns (220) a corresponding subset of the registered channels; and communicates (225) the corresponding subset to each registered client therein. A RCD (125) registers (505) with the controller (105); and receives (510) a subset of the registered channels, the subset corresponding to a client group. In this manner, a RCD discovers a subset of channels in a network (130) to which it can subscribe that is appropriate for its resources and/or capabilities.

Abstract: Disclosed is a method of operation for use in a radio communications system comprising a cellular network of base stations and mobile units linked to the base stations. The method comprises detecting that a base station has become isolated from the system, wherein the isolated base station has lost at least one link to other base stations but is still in radio communication with its mobile units and changing an output power level of said isolated base station relative to an output power level of one or more selected co-channel base stations of neighboring cells of the cellular system, whereby the range of communications provided by said isolated base station is changed to a different finite value relative to that provided by the said co-channel base stations.

Abstract: A method and apparatus are provided for processing a windowed time division multiplexed signal received by a radio receiver. The method includes the steps of detecting (802) a pilot symbol within the windowed time division multiplexed signal, determining (804) a difference between the detected pilot symbol and a corrected pilot symbol where the corrected pilot signal has been corrected for distortion caused by windowing of the windowed time division multiplexed signal and calculating (806) a channel response estimate based upon the determined difference between the detected pilot symbol and corrected pilot symbol.

Abstract: A first device receives first data that includes a plurality of input vectors, which includes a primary input vector and a set of secondary input vectors and detects uncorrectable errors in the first data based on a quality metric indication. Based on detecting the uncorrectable errors in the first data, the first device substitutes a predetermined codeword for the primary input vector encoded using a non-perfect code, and substitutes a predetermined input vector for the primary input vector. The first device modulates a set of encoded secondary input vectors using the predetermined input vector to generate a modulated set of encoded secondary input vectors and transmits as second data the predetermined codeword and the modulated set of encoded secondary input vectors to a target device, wherein the substituting step creates a first number of errors that is detected by the target device as uncorrectable errors in the transmitted second data.

Abstract: A computer-readable storage element has code stored thereon that programs a processing device within a communication device to implement a method. The method includes: receiving a plurality of bursts and detecting a failure to receive a preceding header burst; extracting embedded data from the plurality of bursts; determining from the embedded data whether the plurality of bursts comprises valid voice bursts; and when the plurality of bursts comprises valid voice bursts, generating at least one header burst using the embedded data, and transmitting the at least one header burst and the voice bursts.

Abstract: Multiple-configuration communication apparatus includes: a communication device (130) simultaneously maintaining at least a first and a second channel; a storage device (114, 116, 118) storing a plurality of communication configurations; and a configuration controller (120) determining a first time frame and during the first time frame, selecting a first communication configuration of the plurality of communication configurations and controlling the communication device to configure itself to the first communication configuration to at least one of transmit and receive information over the first channel, and determining a second time frame that is different from the first time frame and during the second time frame, selecting a second communication configuration of the plurality of communication configurations, and controlling the communication device to configure itself to the second communication configuration to at least one of transmit and receive information over the second channel.

Abstract: One provides (401, 402) both an in-phase signal component (501) and a quadrature signal component (601) wherein the latter has a non-zero portion. These two signal components are then combined (403) to provide a Cartesian training waveform that can be used when training a linear amplifier that uses Cartesian feedback linearization. By one approach, the non-zero portion of the quadrature signal component can be coincident with a zero-crossing portion of the in-phase signal. In many application settings this non-zero portion of the quadrature signal component can be less (and sometimes considerably less) than a peak amplitude of the in-phase signal component. One may also shape the in-phase signal component to have a smoothed envelope. This may include, for example, using a smoothed sine wave such as a raised-sine function.

Abstract: Base radios and communication apparatus (100) that include: a chassis (110); at least one power supply module (120) having a height that is substantially the height of a three rack unit chassis and having a width that is substantially one sixth the usable width of a nineteen inch rack; at least one fan kit module (130) having a first fan kit module dimension that is substantially the height of the power supply module and a second fan kit module dimension that is substantially five sixths the usable width of a nineteen inch rack; and at least one other module (140, 150) having a first module dimension that is substantially the second fan kit module dimension and having a corresponding second module dimension.

Abstract: A system and method are provided for managing information in a wireless network. The information can be utilized during handoff of a client from an access point to an access point. The method includes a first frame being generated and transmitted by the client to the access point through the access point. The frame includes a request for the information, wherein the information includes at least a target beacon transmission time (TBTT) of the access point. The method also includes the client receiving a second frame containing the information from the access point through the access point.

Abstract: A first infrastructure system device other than a mobile station generates an encryption key and encrypts the encryption key with a first intrakey associated with a first zone that includes a second infrastructure system device other than a mobile station, yielding a first encrypted encryption key. The first intrakey is used only by infrastructure system devices other than a mobile station for encrypting at least the encryption key prior to transport within the first zone. The first infrastructure system device forwards the first encrypted encryption key to the second infrastructure system device.

Abstract: A method and apparatus for multicast communication, wherein the apparatus is configured for performing the method that includes the steps of: communicating (210) a request to a server to join a first multicast group, the first multicast group associated with a first multicast address; determining (220) a second multicast group corresponding to the first multicast group, the second multicast group having a second multicast address; joining (230) the second multicast group to create a corresponding multicast tunnel; receiving (240) a first multicast packet from the server using the multicast tunnel, the first multicast packet comprising the first and second multicast addresses; removing (250) the second multicast address from the first multicast packet; and forwarding (260) the first multicast packet comprising the first multicast address to an entity.

Abstract: A method and apparatus for frame synchronization in a communication network is provided. The communication network includes a plurality of base stations. The method includes determining the start time of reception of a downlink frame received from each of at least a second base station. The method also includes determining the radio frequency propagation delay associated with the downlink frame received from the each of at least a second base station. Further, the method includes determining the reference downlink frame transmission time at the first base station, based on the reception start time of the downlink frame and the radio frequency propagation delay associated with one of the at least a second base station.

Abstract: A method and apparatus are provided for allocating radio frequency carriers in a radio service area having a plurality of radio frequency TDMA carriers and FDMA carriers. The method includes the steps of receiving a call, when the received call is a FDMA call and a FDMA carrier is not available for the FDMA call, then preempting a pre-existing call on a TDMA carrier of the plurality of radio frequency TDMA carriers for the FDMA call and when the received call is a TDMA call and a TDMA slot is not available for the TDMA call, then preempting a pre-existing FDMA call on a TDMA capable carrier of the plurality of radio frequency TDMA carriers for the TDMA call.

Abstract: A plurality of varactors are coupled via a first electrode to a shared terminal that in turn can operably couple to a source of control voltage. A second electrode for each varactor couples to a corresponding switch, where each switch couples to at least two different voltage levels. So configured, the second electrode of each varactor can be individually connected to either of two voltage levels. This can be leveraged to control, in coarse steps, the overall aggregate effective capacitance presented by these components. At least some of these varactors can have differing corresponding capacitances, the specific values of which can be selected in order to facilitate relatively equal spacing and substantially equal rates of reactance change versus the control voltage value between aggregate-capacitive reactance ranges as correspond to differing settings for the switches at various levels for the control voltage source.

Abstract: A supply voltage to a power amplifier is controlled. A signal at a single point in a power amplifier is detected. A signal parameter is determined for the detected signal. The signal parameter is compared to at least one predetermined limit. This comparison result is used to determine whether to adjust a supply voltage to the power amplifier. The signal parameter is, for example, an average power or a peak-to-average power ratio.

Abstract: A DPC (300) includes: a frequency source (310) for generating a clock signal; a delay line (320) for receiving the clock signal and generating phase-shifted clock signals at output taps; a digital control device (330) for generating a control signal; and a windowing and selection circuit for generating the output signal, that includes sequential logic devices (500, 510, 520) and a combining network. A method for use in a DPC includes: receiving (400) a control signal based on a desired output signal that identifies a first output tap on the delay line; based on the control signal, selecting (410) at least two output taps on the delay line for receiving at least two different phase-shifted clock signals; and generating (420) an output signal based on the control signal and the received phase-shifted clock signals that is substantially the desired output signal.