Abstract: A method for calculating service redundancy of a wireless network is provided. The method comprises determining one or more of a plurality of routes through which a node can communicate to reach a destination. A routing metric is calculated for each of the plurality of routes. Using the calculated routing metrics a route having a best routing metric is identified as a best route to the destination. Service redundancy for each node within the wireless network is calculated using a sum of weighted ratios of the best routing metric to at least one alternate routing metric.

Abstract: A method and apparatus for securing a layer II bridging switch for subscriber aggregation is described. The method receives packets from a circuit on the layer II bridging switch and makes a forwarding decision for each packet based on at least one of the addresses of the packet being currently assigned to a second circuit.

Abstract: A method and apparatus for determining a set of common link rates for communication between two storage network elements in a storage network system. During the speed negotiation process, a controlling storage network element receives supported link rate information from a connected storage network element without providing any information in return. By not providing such information, although the speed negotiation process may not be completed, the controlling storage network element is still able to determine the supported link rates of the connected storage network element.

Abstract: A radio frequency receiver for discriminating a modulation type to decode a signal field of an encoded signal in a wireless communication system. The radio frequency (RF) receiver receives an encoded signal having a preamble training sequence associated with a frame, the preamble training sequence including the signal field. The radio frequency receive generates at least a first log-likelihood ratio (LLR) stream and a second LLR stream for each of a plurality of sub-symbols for a predetermined portion of the received encoded signal based upon an m-bit wide modulation reference, wherein m represents the bit width of the modulation reference. The first LLR stream and the second LLR stream each include a plurality of LLR values. The plurality of LLR values of the first LLR stream are summed to produce a first cumulative LLR, and the plurality of LLR values of the second LLR stream are summed to produce a second cumulative LLR.

Abstract: A computer program, method, and apparatus that manage reservation of IT resources for efficient use thereof. Upon receipt of a reservation request, an IT resource finder identifies IT resources that are available for reservation in a period specified in the request. Subsequently a vacant period finder identifies vacant periods containing the specified reservation period, based on the reservation records of each IT resource. Out of the found vacant periods, an idlest period selector then selects an idlest period that offers a largest number of available IT resources. From among a set of IT resources whose vacant periods agree with the idlest period, an IT resource selector selects an appropriate resource to serve the given reservation request. A reservation registration processor then registers the reserved IT resource with the reservation data repository as determined by the IT resource selector.

Abstract: Discriminating a modulation type based upon a predetermined portion of symbols for a received encoded signal. While receiving the encoded signal, at least a first and a second cumulative soft metrics are generated using the plurality of symbols over a predetermined portion of the received encoded signal. The first cumulative soft metric is compared with the second cumulative soft metric to generate or provide a discriminated modulation type. With the discriminated modulation type, the signal field is decoded, allowing for decoding of the accompanying data payload with the encoded signal.

Abstract: An embodiment of an apparatus for channel assessment is provided, comprising a radio frequency (RF) unit, a baseband unit and a microprocessor control unit (MCU). The baseband unit coupling to the RF unit directs the RF unit to selectively hop into one of a plurality of available channels in a frequency band using a pseudorandom sequence to receive a plurality of packets via the hopped channel. The MCU coupling to the baseband unit accumulates a measure for the hopped channel according to reception results of the packets and marks the hopped channel as a bad channel when the accumulated measure exceeds a predetermined threshold. The measure represents the inaccuracy extent during packet reception via the hopped channel.

Abstract: A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an an

Abstract: Methods and system for dynamic reallocation of data processing resources for efficient processing of sensor data in a distributed network is provided. The methods and system include determining a data transmission cost ft; determining a data processing cost fp; determining a data storage cost fs; and determining a data query Q which minimizes f(ft+fp+fs) for a system of networked data processing resources.

Abstract: A communication processing apparatus that performs processing of transmitting streaming data includes a communication control portion examining the state of data communication and performing processing of changing priority information to be defined for send data based on the result of the examination, and a network interface performing processing of outputting data with the priority information. In this case, the communication control portion performs processing of setting a lower priority than a predetermined priority for the streaming data in the initial period of the transmission of streaming data, examination of the state of data communication in a lower-priority-setting period at an examination point functioning as predefined examination timing, and processing of changing the priority setting based on the result of the examination.

Abstract: A method and a system for controlling a reverse link rate by using the number of active users who are carrying out communication in a CDMA 1xEV-DO mobile communication system is disclosed. A value of rise-over-thermal (ROT) at each antenna end of a wireless base station is measured and compared with a threshold ROT which defines an allowable limit of the ROT. A reverse activation control bit is set as 0 if the measured ROT value is smaller than or equal to the threshold ROT. The number of the active users is compared with a threshold user number which defines an allowable limit of the active users if the measured ROT value is greater than the threshold ROT. The reverse activation control bit is set as 0 if the number of the active users is smaller than or equal to the threshold user number. The reverse activation control bit is set as 1 if the number of the active users is greater than the threshold user number.

Abstract: A baseband receiver and corresponding methods are arranged and configured to mitigate effects of direct current (DC) distortion and process an Orthogonal Frequency Division Multiplexing (OFDM) signal as provided from a direct conversion radio or receiver. The baseband receiver includes an OFDM demodulator configured to demodulate the OFDM signal, a post processor coupled to the OFDM demodulator and configured to provide symbols corresponding to the OFDM signal, and a compensator coupled to at least one of the OFDM demodulator and the post processor and configured to reduce error rates out of the baseband receiver that result from DC distortion in the direct conversion radio.

Abstract: A method of detecting positions of first and second marks, at least one of the first and second marks being associated with a substrate, and exposing the substrate to a pattern. The method includes steps of sensing an image of the first and second marks, an image of the first mark and an image of the second mark having respective periodic patterns, of which periods are different from each other, and being formed in respective regions separate from each other, performing an orthogonal transform of a signal of the sensed image to obtain frequency components corresponding to the first and second marks, calculating positions of the first and second marks based on phases of respective frequency components corresponding to the first and second marks in the transformed signal, and positioning the substrate based on the calculated positions to expose the positioned substrate to a pattern.

Abstract: The present invention discloses a method for synchronizing the configuration data between an EMS and a NE, which includes: dividing the configuration data in the NE into several layers so that different configuration data layers include different minimum unit configuration data sets; setting a minimum unit identifier word for each configuration data layer to identify the configuration data changes of the configuration data layer; when the configuration data of the NE is changed, changing the corresponding identifier word and sending a configuration changed event notification to EMSs; after receiving the configuration changed event notification, the EMS synchronizes the configuration data according to the event notification. With the present invention, it is possible to make the EMS effectively monitor and synchronize configuration data with the NE in a real-time manner, so that network management efficiency can be improved.

Abstract: An apparatus for controlling an operation of a layered communication system, the layered communication system transmitting information through a communication channel, has a provider for providing a property of the communication channel, an extractor for extracting a first set of parameters of a first communication layer and a second set of parameters of a second communication layer to determine current statuses of the first and second communication layer, a provider for providing a first abstraction model and a second abstraction model, wherein each abstraction model models a characteristic of the first and second communication layers, respectively, a determiner for determining an optimized set of parameters to be used by each of the first and second communication layers based on the first and second abstraction models, the channel property and an optimization goal, a provider for providing the optimized sets of parameters to the first and second communication layers.

Abstract: Provided are a time-division data multiplexing/demultiplexing system and method capable of preventing errors in processing data signals which occur due to a phase difference between data signals and a multiplexing reference clock in a multiplexing process or a phase difference between a multiplexed data signal and a demultiplexing reference clock in a demultiplexing process. The time-division data multiplexing system includes: a phase adjusting unit which adjusts a phase of each of a plurality of data signals having different phases from one another for enabling the data signals to be time-division multiplexed when a plurality of values of the data signals indicate a stable state; and a multiplexer time-division multiplexing the phase adjusted data signals according to a multiplexing reference clock.

Abstract: An apparatus for controlling an operation of a plurality of communication layers in a layered communication system provides a property of the communication channel, and includes a storage element for storing a first plurality of sets of parameters defining operation modes of a first communication layer of the plurality of communication layers and for providing a second plurality of sets of parameters defining operation modes of a second communication layer of the plurality of communication layers, a selector for selecting a first set of parameters from the first plurality of sets of parameters and for selecting a second set of parameters from the second plurality of sets of parameters in dependence-on the channel property and an optimization goal and provides the first set of parameters to the first communication layer and the second set of parameters to the second communication layer.