Abstract: A wireless hub uses a first processor to communicate with IEDs, uses a second processor to communicate with landline SCADA devices, and uses a third processor to extract, store and exchange messages between SCADA protocols and IED data formats so as to as to permit two way communications between SCADA users and IEDs which are independent of protocol data formats and time of exchange.

Abstract: In an OFDM transmission scheme, in order to compensate any frequency response variations time wise resulted from any distortion in a transmission path, out-of-synchronization with passage of time, frequency drift, and phase shift, and to improve a demodulation characteristic, a PS detector in a receiver receiving an OFDM signal detects a pilot symbol. A PS1 TPFR calculator calculates a frequency response of the transmission path for a first pilot symbol, while a PS2 TPFR calculators calculates a frequency response of the transmission path for a second pilot symbol for a second pilot symbol. Thereafter, a compensation vector calculator calculates compensation vectors from the frequency responses of the transmission path for both of the first and second pilot symbols by linear approximation. A frequency response compensatory compensates the frequency response variation of subcarriers in a data symbol based on the calculated compensation vectors.

Abstract: Methods are described for maintaining a small bounded aggregate state within network routers pertaining to selected architectural families. Small bounded reservations states are utilized wherein the method is fully scalable for use on large networks. The size of the aggregate state and the complexity of the associated refresh mechanism is determined by the parameters of the network, such as size, and classes, which is in contrast to states based on the number of end-user flows. The method can render deterministic bandwidth use within the network wherein real-time multimedia applications may be accorded strict delay and bandwidth guarantees. The invention provides a middle-ground between the stateful Intserv and the stateless SCORE architectures.

Abstract: An apparatus for multiplexing a digital data input into DSL outputs is disclosed. In one disclosed aspect, the apparatus may be embodied in an enclosure having a height of one rack-unit. The apparatus may include a transceiver for providing connectivity to a digital data line providing 24 DS0 channels. The apparatus may also include at least one DSL transceiver for multiplexing DS0 channels onto corresponding DSL-compatible transmission media using DSL technology. The apparatus may be mounted within a remote terminal (RT), and may receive the digital data line from within the RT.

Abstract: An IP mobility solution for mobile network(s) that combines features of IP multicast and mobile IPv6. The mobile network defines a mobile router (106) attached to one or more mobile network hosts (102). Upon movement of the mobile network from a home network to a foreign network, the mobile router obtains a multicast care of address on behalf of the attached mobile network hosts and creates a binding between the mobile subnet prefix and the multicast care of address. The mobile router communicates the binding information, via binding update messages, to a home agent (150) and to selected correspondent nodes (152) consistent with requested privacy attributes of the mobile network hosts. The privacy attributes allow the mobile network hosts to maintain the privacy of their care of address (and implicitly, their location) relative to certain correspondent nodes.

Abstract: Apparatus, and an associated method, for controlling a packet data flow in a radio communication system, such as a third-generation, cellular communication system. Indicia of communications of the packet data flow upon an air link extending to a mobile station are provided to a selector. The selector selects, responsive to values of the communication indicia, whether to alter, such as by reducing or terminating, the packet data flow upon the air link. Selection is made by the selector and indications of the selection are provided to an allocator. The allocator allocates communication capacity in the radio access network of the communication system to the packet data flow as well as other ongoing packet data flows in the radio access network.

Abstract: Digital Visual Interface (DVI), or High Definition Multi-media Interface (HDMI), data is received from a source and sent to a transmitter chip that includes a transition minimized differential signaling (TMDS) receiver that outputs a 3-data and 1-clock physical signaling stream representing the DVI or HDMI data. This stream is rendered into I and Q data by an ASIC or FPGA and sent to a wireless transmitter for modulation, upconverting, and transmission to, e.g., a nearby display device without ever rendering the data into baseband video on the transmitter chip. The display device has a receiver chip that is essentially the inverse of the transmitter chip.

Abstract: Apparatus and a method for serving telecommunications customers, using the transmission capabilities of a Packet Network. A customer having Customer Premises Equipment (CPE) that includes a Customer Premises Equipment (CPE)/Gateway for communicating with a Packet Network, is connected to a port of the Packet Network. The customer is connected to the Gateway of a Home Switch via the Packet Network, and is also connected to Gateways of one or more Guest Switches. The customer has telephone numbers in the Home Switch and each of the Guest Switches. Callers can call the customer as if that customer were directly served by the Home Switch or any of the Guest Switches. Advantageously, the customer and callers to that customer are billed only for the short, usually local, call rate from the selected Home or Guest Switch. Advantageously, the customer can make outgoing calls dynamically via any of the Guest Switches.

Abstract: A cordless telephone implementing using a BLUETOOTH wireless bearer is presented. A BLUETOOTH voice data structure is implemented by coding the voice data at a bitrate below 64 kb/s, such that the full number of payload bits provided by the BLUETOOTH voice data structure are not required for transmission of voice data. The packet payload is then encoded in a non-standard format to implement a robust error detection and/or correction protocol for the voice data, as well as for the provision of a low-rate data channel for transmission of information such as caller ID. Alternatively, a BLUETOOTH non-voice data structure can be employed by transmitting encoded voice data as user payload bits. The data link is then flushed each time new voice data is ready for sending by the transmitting device. If slots are available before the data link is flushed, unsuccessfully transmitted data can be automatically resent, thereby implementing time and frequency diversity.

Abstract: An information processing system comprises an information processing apparatus, a switch, and a storage device, wherein the first communication ports and the third communication ports are connected to the second communication ports. When a response from a storage device to a data input/output request is not received within a predetermined time period, the information processing apparatus transmits a second and a third data input/output requests from the first communication port on the first communication channel, and transmits an inspection request to the switch to inspect a second communication port on the first communication channel. When responses to the second and third data input/output requests are not received within a predetermined time period, and a response to the inspection request is received within a predetermined time period, the information processing apparatus determines that there is a fault in the first communication port on the first communication channel.

Abstract: The present invention provides an improved method and a system for processing data packets in a router. The router includes a plurality of input/output ports and more than one packet processing units. The packet processing units derive from a piece of information associated to each data packet one output port to forward the data packet to. In response to a data packet arriving at one input port one packet processing unit is determined. The determined packet processing unit is then requested to derive a respective output port. The output port is derived from a piece of information within the packet. An identification identifying the respective output port is in the following returned to the requesting unit. Finally, the data packet is forwarded to the identified output port. The method and system according to the present invention optimize advantageously resource utilization that leads to higher packet processing speed and helps to lower the costs and power requirements.

Abstract: A method and apparatus for scheduling upstream data packets in a communication system is described. The present inventive method obtains a priority value (PV) for an upstream data packet and compares (using hardware registers) the PV of a queued upstream data packet to a current system timer. In accordance with one embodiment of the present invention, the current system timer comprises the current clock time of the communication system. When a PV equals the current system timer, the method transmits the upstream data packet associated with the PV to the CMTS via the upstream transmission path.

Abstract: A dual mode ISDN S/U interface converter and a network arrangement are provided. The dual mode ISDN S/U interface converter is capable of selectively operating in either line terminator (LT) or work terminator (NT) modes by an adjustment of jumpers or other electronic switches. The ISDN S/U interface converter also provides a selectable and reversible direction of sync flow over a common path, with a common sync circuit, common control, and common data bus. With the dual mode capability of the ISDN S/U converter, a system integrator can use a single type of equipment for insertion between an ISDN switch and a multiplexer.

Abstract: Embodiments of the invention are directed to a system and an apparatus for enabling a user device or a plurality of user devices to communicate with a gateway service device. The system may include at least one user device, at least one remote access device, a communication network, a central access device, and the gateway service device. The system operates such as if the gateway service device and the user device are on the same network. The data may be transmitted from the user device to the at least one remote access device where it is encapsulated to allow the data to be routed over the communication network. The central access device may receive the data and de-encapsulate the data in order to transfer the data to the gateway service device.

Abstract: Disclosed is a system and method for wirelessly exchanging communications with at least one mobile unit in a network that includes base stations units. The method includes receiving a wireless communication from the mobile unit, where the wireless communication is under a wireless communications protocol that does not provide for handoff of communications links between base station units. The method also includes obtaining a unique session identifier for the communication with the mobile unit, and establishing a communications link with the mobile unit, where the communications link includes link context data associated with the mobile unit. The link context data associated with the mobile unit is identified at least in part based on the unique session identifier.

Abstract: A data communications apparatus which uses the same frequency band and modulation scheme with those used in the counterpart apparatus, and has a simple configuration and shows high reliability in transmitting and receiving high-rate data through a cable network. The main processing unit receives the first data from the data processing device to perform orthogonal frequency division multiplexing (OFDM) on the first data to generate first OFDM signal, and demultiplexes second OFDM signal from the counterpart apparatus to recover the second data and provide to the data processing device. The RF unit transforms the first OFDM signal into a radio frequency band to generate the first modulated signal and transmit to the counterpart apparatus through the second port and the cable network. Also, the RF unit receives the second modulated signal from the counterpart apparatus to recover a second OFDM signal and provide to the main processing unit.

Abstract: A method and system thereof for forwarding data packets according to an order of forwarding while lessening delays. A resource request corresponding to a first data packet that is first according to the order is generated. A first resource request corresponding to a second data packet that follows the first data packet according to the order is generated. Generation of a subsequent resource request for the second data packet is delayed for a specified time period. A second resource request for the second data packet is generated before the specified time period is due to expire when the first data packet is forwarded. In this manner, a delay attributable to the specified time period is lessened.

Abstract: A network architecture (100) that supports periodic and aperiodic data transmissions over a network databus. The network (100) comprising a plurality of Network Interface Controller (NIC) modules (120, 169) configured to communicate with each other with at least one of the modules acting as a master NIC modules (120) and configured to allocate data transmission bandwidth on the network databus (114) using a set of priority sequences stored in a table (158) accessible by the master NIC (154) within the master timing NIC module (120). The table (158) is used by the master NIC (120) to allocate bandwidth on the network databus (114) after transmission of periodic data and according to priority, length and frame sequence. In this way, aperiodic data from some NIC modules is guaranteed a certain amount of bandwidth on the network databus (114).

Abstract: A method and system for measuring the throughput of transmissions over a wireless local area network having a station and an access point. The station can send messages to the access point during a test period, where the messages can be sent as data frames. The access point can receive messages sent from the station during the test period. For messages received by the access point, the access point can send acknowledgements to the station, where the acknowledgements can be sent as control frames. The station can receive acknowledgements from the access point for messages received by the access point. The station can determine a throughput from the station to the access point for the test period based on the acknowledgements received at the station from the access point during the test period.

Abstract: A channelizing receiver is provided with a plurality of channel receivers for monitoring respective segments of a frequency band being monitored by the channelizing receiver. Each channel receiver includes a channel processor for detecting an electromagnetic signal, measuring the peak amplitude of the electromagnetic signal and comparing this peak amplitude with the peak amplitudes for the electromagnetic signal detected by adjacent channel receivers. Data responsive to a detected signal is transmitted from a channel receiver only if the channel receiver's measured peak amplitude is higher than that for the adjacent channel receivers. The data include an estimate of the frequency and bandwidth of the detected signal made by the channel receiver transmitting the data based upon an assessment of the relative peak amplitudes.