Abstract: A method and apparatus for providing ABR and UBR services with one FIFO queue. The queue accepts UBR data until a threshold queue capacity (EPD) is reached, at which point data is dropped. This threshold is dynamically adjusted by adding a value proportional to the difference between the actual UBR bandwidth and the target UBR bandwidth. Applications sending data for ABR service are provided with a feedback which allows those applications to regulate the speed at which data is transmitted to the queue, this feedback is a function of some threshold value (AQT) which is also dynamically adjusted as described above. If the queue is being underutilized, an adjustment is made to both EPD and AQT.

Abstract: A paging signal is detected where the paging signal is intended for a mobile-telephone having a paging channel frequency that is different than a paging channel frequency associated with a concentrator. A base station transmits a base station-to-mobile-telephone (BS-MT) paging message by including such BS-MT paging message in a base station-to-concentrator (BS-C) paging message. The BS-MT paging message includes a message portion and a mobile-telephone identifier portion, wherein the mobile-telephone identifier portion indicates the mobile-telephone to which the BS-MT paging message is intended. The BS-C paging message includes the MT paging message and a concentrator identifier portion for indicating the concentrator to which the BS-C is intended. The BS-C paging message is transmitted over a paging channel on a frequency f1 associated with the intended concentrator (i.e., concentrator through which the mobile-telephone is linked to the base station).

Abstract: A method for secure multiparty computation is disclosed. In one embodiment, participants to a secure computation agree upon a function to be computed and a representation of the function as a circuit with at least one gate. Logical tables are then generated for each gate. A logical table includes all possible input and output values for the gate based on the function. These input and output values are then encoded and the encoded tables are passed through a mix network, which generates a blinded table for each encoded logical table. A blinded table corresponds to the encoded logical table except that its rows are randomly permuted and entries are encrypted. After this initial blinding round, participants provide encryptions of their encoded secret inputs. The participants then jointly compute the function of interest using the encrypted secret inputs and the representative circuit.

Abstract: An article comprising a support portion that is coupled to an element portion, both of which portions are formed from some of the layers of a multi-layer substrate. In one embodiment, the support portion comprises a torsional member, an actuating plate and a beam, wherein the beam mechanically links the actuating plate and the element portion. At least one torsional member attaches the support portion to the multi-layer substrate and allows the element portion to move independently of the substrate, such as when actuated by an underlying electrode. When actuated, the actuating plate of the support portion is drawn toward the underlying electrode while the element portion rises from a first (unactuated) position within the substrate toward a second (actuated) position outside of the substrate, in see-saw like fashion. The present article is useful in a variety of applications, such as, for example, optical applications where it can be used to form improved chopper switches and optical cross connects.

Abstract: The present invention provides a prefetch system for use with a cache memory associated with a database employing indices. In one embodiment, the prefetch system includes a search subsystem configured to prefetch cache lines containing an index of a node of a tree structure associated with the database. Additionally, the prefetch system also includes a scan subsystem configured to prefetch cache lines based on an index prefetch distance between first and second leaf nodes of the tree structure.

Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold.

Abstract: The invention comprises a system and method for transmitting and receiving VoDSL voice traffic that avoids, where possible, the transcoding of a speech signal multiple times. The invention advantageously provides enhanced Quality of Service (QoS) by opportunistically avoiding signal degradation where VoDSL to VoDSL gateway communications may be provided.

Abstract: The present relief module equipped random access memory avoids the need for enforced idle cycles for the processors, thereby enabling the State Machine to operate at its maximum speed. This relief module equipped random access memory also enables the Central Processing Unit to access the data in the single-port Random Access Memory as required to read and write the data contained therein. This is accomplished by the addition of a single-port Random Access Memory module to the plurality of Random Access Memory modules that are typically specified for a particular application. The extra Random Access Memory module alternates its output with each of the others of the plurality of Random Access Memory modules, on a sequential basis, thereby providing effectively extra clock cycles for each Random Access Memory module.

Abstract: A method is disclosed for decoding multiple-coded symbols from a coded input symbol stream in a single clock cycle. The method constructs an original Huffman look-up table by extending the associated Huffman tree to decode multiple symbols in one clock cycle in a first embodiment and decodes multiple DCT coefficient symbols in an alternate embodiment. An advantage of the method is that the depth of the new Huffman tree is adjustable thereby making the method easily adaptable to various hardware architectures. A further advantage of the present invention is that the decoding process speed is significantly increased while the size of the look-up table is nominally increased.

Abstract: Known sequences are detected and identified in a fast fading environment using a segmented correlator and FHT (Fast Hadamard Transform) architecture. The incoming sequence of samples or data is segmented into blocks. Each block is individually detected using a correlator/FHT segment. Each sequence identifying output of each correlator/FHT segment is summed with the corresponding output of other correlator/FHT segments. Each sum is compared with a threshold to determine whether a particular sequence has been detected and identified.

Abstract: A method of coding stereo audio spectral values first carries out grouping of those values in scale factor bands, with which scale factors are associated. Sections are formed next, each comprising at least one scale factor band. The spectral values are coded within at least one section with a code book assigned to the section, out of a plurality of code books each with a code book number assigned to it, the number of the code book used being transmitted as side information to the coded stereo audio spectral values. At least one additional code book number is provided, which does not refer to a code book but shows information relevant to the section to which it is assigned. A method of decoding stereo audio spectral values which are partly coded by the intensity stereo process and which have side information uses the relevant information, showing the additional code book numbers, to cancel the existing coding of the stereo audio spectral values.

Abstract: A system for data communication receives more than one input data streams that have independent clocks and an input order. The system synchronizes the input data streams to a common clock, and multiplexes the synchronized data streams onto an input of a data communication link. The system demultiplexes one or more output data streams from an output of the data communication link. The system identifies each of the output data streams and reorders the output data streams into the same order as the input data streams.

Abstract: A multi-packet-switch system having a standard primary switch interconnect to handle inter-switch packet traffic, separate buffer areas for each primary interconnect and the device ports, the ability to identify specific packet streams by an identifier in each packet, and the ability to specifically manage static routing of packets based on the packet stream identifier. Creating secondary switch interconnects between device ports, and routing identified packet streams to these secondary switch interconnects. The secondary switch interconnects can be dedicated to identified packet streams, thus eliminating primary interconnect buffer contention with other packet streams.

Abstract: A system and method for wireless communication using half speech blocks which results in half the number of coded bits as a full speech block after coding. The half speech block can be created with a lower speech rate mode of an adaptive multi-rate vocoder. The reliability of the first speech frame is somewhat lower; however, this is not expected to significantly impact voice quality. Further, reliability can be compensated for by increasing power some on the less reliable blocks.

Abstract: An optical interface is provided to supplement an electrical interface between a main circuit board (102) and a mezzanine circuit board (104) that is mounted above the main circuit board. The mezzanine circuit board is mounted generally parallel to, and above the main circuit board. In between the two circuit boards is provided an optical interface. A light source (200) is mounted to one of the circuit boards and a complementary photo detector (202) is mounted on the other circuit board in a manner such that the photo detector receives light from the light source. Two optical interfaces are preferred for two-way communication between the main circuit board and the mezzanine circuit board. The light source is preferably a laser and the photo detector is preferably a photo diode. The optical interface provides a high speed interconnect to increase conductivity and functionality between the main circuit board and the mezzanine circuit board.

Abstract: A method is disclosed for determining the admissibility of an offered session of traffic of a specified class to a server in a packetized communication network. Each class c has a peak traffic rate r(c). The server has a total processing rate C. Admitted packets are scheduled according to an EDF scheduling discipline. The method for determining admissibility comprises defining an operating point for the server. The operating point represents the number of sessions Nc of each respective class currently offered or currently being served. The method further comprises determining whether the defined operating point falls within a set of operating points that together define an admissible region. The admissible region consists of operating points for which the probability of violating a delay bound for any packet is below a threshold. The determination of the admissible region involves principles of statistical multiplexing.

Abstract: In a mobile communication system, independent versions of a signal are transmitted over plural antennas. The antennas are either spatially separated or orthogonally polarized with respect to each other so that the independent versions of the signal are not subjected to correlated fading. Each independent version of the signal is transmitted from a respective antenna a fixed delay after transmission of a previous version of a signal from a different antenna. The fixed delay is at least one information bit of the signal. Received versions of the signal are equalized in an equalizer or RAKE architecture to provide a composite signal. The equalizer has respective sets of equalizer taps that are separated from adjacent sets of equalizer taps by the fixed delay. The RAKE architecture has respective sets of RAKE fingers that are separated from adjacent sets of RAKE fingers by the fixed delay.

Abstract: A system and method for providing secured file dispersal and access control protocols based on combinatorial techniques to reduce the security overhead associated with information retrieval systems employing parallel access to mirror sites.

Abstract: A method and system for increasing the capacity and spectral efficiency of optical transmission includes pre-filtering optical pulses utilizing a bandwidth substantially proportional to the bit rate of the transmission system prior to propagating the optical pulses along a transmission fiber and post-filtering the propagated optical pulses utilizing a bandwidth substantially proportional to the bit rate of the transmission system.

Abstract: A method and apparatus for optimizing a distributed polling system in a network comprising a plurality of nodes. The method includes identifying bandwidth constraints on polling traffic for each of the plurality of nodes. Selecting, from a plurality of unpolled nodes within the plurality of nodes, at least one poller node according to a maximum number of unpolled nodes assignable to each of the at least one poller node without violating bandwidth constraints, and respectively assigning the unpolled nodes as pollee nodes to the at least one poller node. The apparatus includes a central manager and a plurality of pollee nodes coupled to at least one poller node via at least one routing path. At least one aggregating node is coupled to the at least one poller nodes, where the aggregating node is further coupled to the central manager.