Abstract: A method and apparatus for increasing the capacity of a system that use four transmit antennas and that employs conventional channel coding by performing space-time coding in a particular way. Each of two pairs of symbol sub-streams is space-time coded to form a respective pair of transmit-sequence chains, where at least one of the formed pairs of the transmit-sequence chains is a function of symbols of the respective symbol-sub-stream pair and not a function of the symbols of the other symbol-sub-stream pair.

Abstract: A security bar providing improved security from breach is obtained with the use of a fiber optic cable longitudinally inserted in a hollowed out cavity thereof. Monitoring of the security bar to identify attempts at breach thereof may be achieved by connecting an optical light source to one end of the fiber optic cable and a light monitoring device (i.e., an optical receiver) at the other end. In this manner, a breach of the security bar is identified when the optical receiver fails to receive the light generated by the optical light source. In one embodiment, an isolator which consists of a material that is soft enough to absorb a potential shock but hard enough to break or splinter if the security bar is substantially deformed (e.g., wood) surrounds the fiber optic cable.

Abstract: A transport channel multiplexing system provides improved use of wireless resources in a shared data channel system. For example, the transport channel system reduces the amount of transport format information required for using a shared data channel, such as the actual number of packet data units in a transport channel of the shared data channel. Additionally, by scheduling or multiplexing coded sub-blocks from one or more transport channels over the shared data channel, the transport channel multiplexing system can provide improved integration with other important features, such as incremental redundancy, fast adaptation to channel conditions and transport channel dependent quality of service (QOS) control, to provide improved system performance.

Abstract: A method and apparatus for updating inter-server communication software in a network are provided. More particularly, the invention is directed to a technique for software updating of servers that reduces the unavailability of network resources due to the update process. In this regard, the method includes the implementation of proxy software in servers that are to be updated. The servers are then selectively updated (e.g. one server at a time) in a manner, using the proxy software, to allow the servers to communicate with one another during the entire update process.

Abstract: A communications system multiplexes voice communications signals onto one or more transport level connections established through a packetized network, such as the Internet. The invention supports the use of variable-length packets and accommodates variable jitter. The system conforms to real time protocol (RTP) and employs internet telephone gateways (ITGs) to bind users to channel identifiers, to indicate payload type and length, to provide channel identification and time stamps, and to indicate cessation and resumption of voice traffic from a particular user through use of, for example, marker bits.

Abstract: A dispersion compensation apparatus providing both coarse and fine dispersion compensation employing a pair of slab waveguides, a grating interconnecting the two waveguides, a mirror disposed within the second slab waveguide and one or more thermooptic lense(s), positioned between the mirror and the grating.

Abstract: An improved waveguide structure employing blocks of waveguide core material positioned sufficiently close to a waveguide core thereby eliminating strain effects and its resulting undesirable polarization crosstalk. The improved structures are applicable to a variety of optical components including bent waveguides, directional and star couplers.

Abstract: The present invention discloses a system and method for channel coding data within a digital communication system. A data receiving circuit receives a digital input data sequence and periodically inserts known symbols, such as zeros, into the digital input data sequence as part of a convolutional zero code of the present invention. It forms an expanded digital input data sequence. An encoder is operatively connected to the data receiving circuit and trellis encodes the expanded sequence to produce a channel coded data stream such that the number of connections between trellis nodes in a trellis are reduced.

Abstract: An IP services switch that supports packetized voice traffic in the form of voice packets from a plurality of enterprises having a plurality of endpoints some of which can use the same IP addresses. The IP services switch includes a plurality of NAT tables, each of which corresponds to a separate enterprise network for providing header and payload IP addresses which are unique to the services switch for the voice packets corresponding to each separate enterprise endpoint. A method of NAT in an intermediate service provider network for header and payload IP addresses in VoIP voice traffic packets is also provided.

Abstract: One embodiment of the present method is for a method that provides packet data throughput information on a per user basis for at least one mobile terminal of a plurality of mobile terminals operatively connected to a communication network. In this embodiment the method may have the steps of: collecting, by the telecommunication network, usage data associated with packet data calls for the respective mobile terminal and forming data throughput information from the usage data; storing, by the telecommunication network, the data throughput information in a storage; and sending, from the communication network to the respective mobile terminal, the data throughput information. The system implements the method.

Abstract: A method of detecting DTX frames in frames received over a communication channel and a power control method are described, where radio link protocol (RLP) information received over the channel may be received, and one or more frames associated with the RLP information may be determined as an erasure or a DTX frame, based on the RLP information. Such determination may be incorporated into outer loop power control algorithms for adjusting a threshold related to a specified quality of service.

Abstract: The method of pre-configuring the optical protect paths in an agile photonic network establishes a protection trail for each optical working path that may be set-up in the network. The pre-configuration is based on building an electrical layer (EXC) graph that takes into account all the connection demands in the network, and finding on this EXC graph a plurality of cycles. Next, the EXC cycles are validated at the optical layer, and are further validated against constraints. The method attempts to find an optimal cycles solution, without exhausting all possible variants.

Abstract: A method and apparatus for increasing the accuracy and reliability of geolocation estimates for wireless communication networks devices includes calculating a geolocation estimate of a wireless communication device for a plurality of time periods, and selecting from the plurality of calculated geolocation estimates, a most reliable geolocation estimate of the wireless communication device.

Abstract: A vehicle speeding alert system is implemented on a GPS enabled wireless device in communication with a wireless network. The alert system periodically determines the speed of a vehicle by determining the speed of the wireless device carried therein, using GPS signals received by the wireless device. For example, speed can be calculated by dividing a certain distance that the wireless device travels by the time it takes to travel that distance. The vehicle's speed is then compared to the speed limit of the roadway on which the vehicle is traveling. The speed limit is determined by comparing the wireless device's location to map data relating to the geographic area around the location. The map data may be stored on the wireless device, or obtained from a map database accessible over the network. If the vehicle speed is above the speed limit, a notification or alert is issued.

Abstract: An optical digital-to-analog (D/A) converter and a method of optically converting digital data into analog form. In one embodiment, the optical D/A converter includes: (1) a splitter configured to receive and split an input coherent optical carrier into a plurality of mutually coherent optical carriers, (2) a switching stage coupled to the splitter and including a corresponding plurality of selector switches configured to pass or interrupt selected ones of the plurality of coherent optical carriers responsive to pattern bits, (3) an amplitude and phase offset stage coupled to the switching stage and including a corresponding plurality of amplitude and phase offset units configured to offset amplitudes or phases of passed ones of the plurality of mutually coherent optical carriers responsive to offset signals and (4) a combiner coupled to the amplitude and phase offset stage and configured to recombine the mutually coherent optical carriers to yield an optical output signal.

Abstract: This invention relates to a method and apparatus for centralized control of operations, administration, maintenance and provisioning (OAMP) for a system comprising sub network elements and sub-elements from a plurality of vendors having different OAMP interfaces. The messages to and from the sub network elements are translated into a standard format for display at a centralized control terminal. Advantageously, a system administrator can control the network without having to have detailed knowledge of the OAMP interface of each element.

Abstract: Apparatus and method for increasing the concentration of a chemical substance in a fluid comprise a micro-fluidic elongated channel formed in a substrate, with the channel being in fluid-flow communication with an ambient region along its elongated dimension. In general, the fluid includes first and second chemical substances having different vapor pressures. The apparatus includes an evaporation controller for increasing the evaporation rate of the fluid from the channel into the ambient region, thereby increasing the concentration of the higher vapor pressure (HVP) substance in the portion of the fluid remaining in the channel and increasing the concentration of the lower vapor pressure (LVP) substance in the portion of the fluid evaporated into the ambient region.

Abstract: A monitoring technique is provided for diagnosing delays in file transfers between a server and a client via a network, which monitoring technique operates to make measurements of ordinary network traffic on a link unique to a given client/server pair connection. In particular, the invention operates to apply a set of rules to partition the file transfer time into increments attributable to specific identified causes. To that end, the invention intercepts and sorts traffic traversing a predetermined monitor point into a set of flows, wherein each flow consists of all of the traffic between one client and one server. For each flow the packet headers and timestamps of all packets passing in each direction are read. The partitioning of the file transfer times is based on the resulting data.

Abstract: A programmable non-volatile memory device includes block switching logic that enables device-level translation rules to be changed. The device-level translation rules map the external addresses received by the flash memory device to the internal addresses of the programmable non-volatile memory device. Because the device-level translation rules are changeable, the physical location in the programmable non-volatile memory device to which an external address maps can be changed in a manner that is transparent to off-device operations. By allowing device-level translation rules to be changed, block management functions can be accomplished within the programmable non-volatile memory device itself.

Abstract: An apparatus in one example has: a telecommunications network having at least an image recognition and comparison module and an scanned image database; a mobile terminal having image scan functionality and image capture functionality, the mobile terminal operative coupled to the telecommunications network; and a database system operatively coupled to the telecommunications network, the database system having at least an image database.