13th week of 2011 patent applcation highlights part 27 |
Patent application number | Title | Published |
20110075518 | MULTI-FREQUENCY, MULTI-BEAM ACOUSTIC DOPPLER SYSTEM - An acoustic Doppler system comprising a plurality of acoustic transceivers, an acoustic subsystem controller and a main processing unit operatively connected to the acoustic subsystem controller. A first of the plurality of acoustic transceivers operates at a first acoustic frequency and is operatively connected to a first group of transducers producing an acoustic signal. A second of the plurality of acoustic transceivers operates at a second acoustic frequency and is operatively connected to a second group of transducers producing an acoustic signal. The first and second acoustic transceivers are adapted to operate concurrently at the first and second acoustic frequencies. The acoustic subsystem controller is operatively connected to the first and second acoustic transceivers and controls the acoustic signals produced by the first and second group of transducers. The main processing unit is adapted to execute instructions to the first and second group of transducers to produce acoustic signals having at least two frequencies and is adapted to run at least two processing methods concurrently. The main processing unit analyzes data received by the first and second group of transducers, automatically adjusts the acoustic frequencies of the acoustic signals produced by the first and second group of transducers, and automatically selects a method of processing the data received by the first and second group of transducers. | 2011-03-31 |
20110075519 | Thermoacoustic device - A thermoacoustic device includes a sound wave generator, a plurality of first electrodes, a plurality of second electrodes, a first network and a second network. The sound wave generator includes a first surface and a second surface. The plurality of first electrodes are disposed on the first surface. The plurality of second electrodes are disposed on the second surface. The first electrodes and the second electrodes are alternately arranged. Each of the first network and the second network includes a plurality of conducting wires. The plurality of first electrodes are connected together by the plurality of conducting wires in the first network. The plurality of second electrodes are connected together by the plurality of conducting wires in the second network. | 2011-03-31 |
20110075520 | SEISMIC SOURCE WHICH INCORPORATES EARTH COUPLING AS PART OF THE TRANSMITTER RESONANCE - An acoustic energy source for imparting acoustic energy into the Earth's subsurface includes an electrically driven transducer coupled to a source of swept frequency alternating current. A tunable Helmholtz resonator is disposed proximate the transducer. In one example, the resonator has a tuning device configured to maintain a resonant frequency substantially equal to an instantaneous frequency of the alternating current. The tuning device includes an actuator coupled to a sleeve, wherein the sleeve is disposed over selected numbers of openings in a wall of a tube on the resonator. The transducer and the resonator are disposed in a wellbore drilled through rock formations. The wellbore has a plurality of layers of fluid therein, each layer thereof having a different density and/or viscosity. | 2011-03-31 |
20110075521 | ACOUSTIC TRANSDUCER - An acoustic transducer that enables acoustic radiation at a low frequency and that also improves efficiency of the acoustic radiation into liquid is provided. The acoustic transducer according to the present invention includes bending vibration module 7 that is formed by at least one bending oscillating body 1 that has at least one plate type piezoelectric resonator 2 and diaphragm 3, and supporting member 9 for supporting bending vibration module 7. A plurality of bending vibration modules 7 are cylindrically arranged, and supporting members 9 radially protrude from shaft 8 provided at the center of the cylindrically arranged bending vibration modules 7 and are joined with the ends of diaphragms 3 of adjoining bending vibration modules 7. | 2011-03-31 |
20110075522 | TIME INFORMATION-ACQUIRING APPARATUS AND RADIO WAVE TIMEPIECE - A time information-acquiring apparatus comprises an input waveform generator which generates an input waveform, a predicted waveform generator which generates plural phase-shifted predicted waveforms, a correlation calculator which calculates a positive correlation based on a first value of the input waveform and a first value of the predicted waveform or a second value of the input waveform and a second value of the predicted waveform, and calculates a negative correlation based on the first value of the input waveform and the second value of the predicted waveform or the second value of the input waveform and the first value of the predicted waveform, a comparator which compares the correlation values to detect an optimal value, and a controller which detects a head position of a second based on a predicted waveform related to the optimal value. | 2011-03-31 |
20110075523 | TIME INFORMATION-ACQUIRING APPARATUS AND RADIO WAVE TIMEPIECE - A time information-acquiring apparatus comprises a receiver receiving a standard time radio wave, an input waveform generator sampling a signal output from the receiver and to generating input waveform data with one or more unit time lengths, the input waveform data at each sampling point having a first value indicating a low level or a second value, the input waveform data within a first characteristic section having a predetermined value unique to codes forming a time code included in the standard time radio wave, an accumulator accumulating the value of the input waveform data during the first characteristic section, a calculator multiplying the accumulated value by characteristic values, and calculating correlation values between the input waveform data and the codes based on multiplied values. | 2011-03-31 |
20110075524 | TIME DISPLAY DEVICE AND TIME DISPLAY METHOD THEREOF - A time display device comprises a dial plate; a plurality of time indication portions set in the dial plate; and a plurality of groups of luminophors. Each of the groups of luminophors corresponds to a time indication portion, and comprises a first luminophor, a second luminophor, and a third luminophor. A clock unit provides current time information. A first switch unit electrifies/powers off the first luminophor. A second switch unit electrifies/powers off the second luminophor. A third switch unit electrifies/powers off the third luminophor. A hour hand controlling module obtains a hour value, and controls the first switch unit to electrify the first luminophor of the time indication portion corresponding to the obtained hour value. A minute hand controlling module obtains the current minute value, and controls the second switch and/or the third switch unit to electrify the corresponding luminophor. | 2011-03-31 |
20110075525 | Hard disk apparatus and driving method therefor - Disclosed herein is a hard disk apparatus, including: a magnetic recording medium; a recording head adapted to record information on the magnetic recording medium; a semiconductor laser adapted to be controlled for light emission in a cycle of a recording clock to irradiate a light spot upon the magnetic recording medium to carry out thermal assistance in magnetic recording by the recording head; a laser driving circuit adapted to drive the semiconductor laser at a timing and with optical power in accordance with a light emission timing signal and a laser power controlling signal; and a controller adapted to set laser power in accordance with at least one of characteristics of the magnetic recording medium, semiconductor laser and recording head and output the laser power controlling signal to the laser driving circuit so that the laser power is adaptively varied. | 2011-03-31 |
20110075526 | Optical Element, Arm Mechanism, and Information Recording Device - Proposed is a technique of guiding light to a waveguide, by which the light use efficiency is increased. In order to achieve the above object, adopted is an optical element comprising, at an outer edge portion thereof, an incident surface on which light from a light source is incident, a diffraction grating surface, and an internal reflection surface which guides light incident from the incident surface to the diffraction grating surface. | 2011-03-31 |
20110075527 | Head gimbal assembly using near-field light and information recording and reproducing apparatus including the same - Of side surfaces of a flexible substrate provided on a flexure, one surface opposing an optical fiber forms a mirror surface inclined by a predetermined angle with respect to the longitudinal direction of the optical fiber. Owing to this configuration, the optical fiber is optically coupled to a near-field light element inside a slider. | 2011-03-31 |
20110075528 | OPTICAL DISC APPARATUS - An optical disc apparatus for shortening time necessary for adjustment while maintaining an accuracy of a result of adjustment, determines “A” pieces (A≧1, A2011-03-31 | |
20110075529 | OPTICAL DISC APPARATUS, FOCUS CONTROL METHOD AND INTEGRATED CIRCUIT - An optical disc apparatus has: a spherical aberration correction unit ( | 2011-03-31 |
20110075530 | CONTROLLER AND METHOD EMPLOYED IN OPTICAL STORAGE APPARATUS FOR GENERATING CONTROL SIGNALS EACH HAVING MINIMUM TRANSMISSION PULSE LENGTH CORRESPONDING TO MORE THAN ONE POWER SYMBOL PERIOD - A controller of an optical storage apparatus for generating a plurality of control signals is provided. The controller includes a code generator implemented for determining a plurality of control codes according to an input data associated with data recording, and generating the control signals to deliver the control codes. Each of the control codes represents one power level. Besides, regarding each of the control signals, a minimum transmission pulse length thereof corresponds to more than one power symbol period. | 2011-03-31 |
20110075531 | Super-Resolution Optical Disc Reader and Read Method Optimized Through Reflectivity Measurement - The invention relates to the field of the optical recording of information on a medium, such as an optical disc. To read an optical disc in super-resolution mode, a procedure for optimizing the power of the read laser beam is implemented. This optimization is based on the observation that a correlation exists between the power allowing the disc to be read without risk in super-resolution mode and the reflectivity of the sensitive layer containing the information. The reflectivity of the optical disc is measured for several power levels of the read laser, a critical power is determined on the basis of the reflectivity measurements made, and a read power sufficiently above the critical power, so as to be well outside a range of power levels entailing risks, is selected according to the critical power. | 2011-03-31 |
20110075532 | Optical Disk Device and Optical Disk Discriminating Method - An optical disk discriminating method and an optical disk device which can detect reflected rays for making discrimination among kinds of optical disks with high accuracies. By switching a plurality of lasers and moving a spherical aberration corrector while moving an objective lens to cause it to approach or keep away from an optical disk, rays reflected light from the optical disk can be detected with high accuracies. Discrimination among the kinds of a plurality of optical disks can be made on the basis of signals generated from the detected reflected rays. This ensures that the kind of an optical disk can be determined through one operation of sweeping. | 2011-03-31 |
20110075533 | DETECTION OF DATA IN BURST CUTTING AREA OF OPTICAL DISK - An apparatus generates outgoing data (OD) to be provided on an optical disk ( | 2011-03-31 |
20110075534 | OPTICAL RECORDING MEDIUM, AND OPTICAL INFORMATION DEVICE - An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr | 2011-03-31 |
20110075535 | METHOD OF ACCESSING OPTICAL RECORDING MEDIA, OPTICAL PICKUP DEVICE, AND OPTICAL DRIVE USING THE DEVICE - An optical pickup device corresponding to an optical recording medium having a plurality of recording layers, and an optical drive using the device are provided. The optical pickup device includes a collimator lens disposed between an object lens and a light source. The collimator lens adjusts a focal length with respect to the optical recording medium, and the object lens focuses light passing through the collimator lens, on the optical recording medium. The object lens is optically optimized for an upper or second-upper recording layer of the optical recording medium. | 2011-03-31 |
20110075536 | CONTENT RECORDING METHOD AND APPARATUS - A method and apparatus for recording contents. The method includes recording contents on a disc; verifying whether an error occurs in the recording; and reducing the number of available recordings of the contents, which is included in recording authority information, by 1, if an error does not occur in the recording. According to the method, if an error occurs in recording, the number of available recordings may be prevented from being unreasonably reduced. | 2011-03-31 |
20110075537 | HOLOGRAPHIC DISC WITH IMPROVED FEATURES AND METHOD FOR THE SAME - An improved holographic data storage disc is provided. The holographic data storage disc includes multiple multimedia content, wherein at least one of the multimedia is locked via one or more cryptographic keys. | 2011-03-31 |
20110075538 | OPTICAL RECORDING CONDITION SETTING METHOD, OPTICAL RECORDING/REPRODUCING DEVICE, CONTROL PROGRAM, AND RECORDING MEDIUM - In order to provide an optical recording condition setting method which reduces effects from uneven properties of a rewritable or recordable optical disk and an optical recording/reproducing device, and to provide an optical recording/reproducing device which executes the method, (i) a test writing is carried out with respect to an optical disk under various settings of recording-power parameters for use in forming a shortest record-mark (S | 2011-03-31 |
20110075539 | RECORDING MEDIUM RECORDING/REPRODUCING METHOD AND A RECORDING MEDIUM RECORDING/REPRODUCING APPARATUS - The present invention provides a recording medium reproducing method comprising the steps of: irradiating light onto a recording medium, the recording medium including a data image and a reference pattern, the reference pattern being divided by a plurality of fractional regions, the fractional regions being in invert, rotational and symmetrical relationship; determining information associated to data-image distortion based on the reference pattern; and correcting position of the data image based on the information relating to data-image distortion. | 2011-03-31 |
20110075540 | RECORDING APPARATUS AND RECORDING METHOD - A recording apparatus that performs recording of data on a disc-shaped recording medium including a recording area, which is capable of recording user data therein, and a replacement area, which is replaced by a defect area included in the recording area, includes a setting section configured to replace a portion of the recording area by the replacement area, and set the portion of the recording area as an area for adjustment, and an adjustment section configured to perform adjustment by using the area for adjustment. | 2011-03-31 |
20110075541 | OPTICAL INFORMATION RECORDING/REPRODUCING OPTICAL SYSTEM AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - An optical information recording/reproducing optical system where resin material has Tg>115° C., first, second and third films are on an optical disc side of an objective lens and surfaces of an optical element, respectively, a light source side of the objective lens has a fourth film having four or more layers not containing Ti, each of the first, second and third films includes a non-high refractive index layer made of one of silicon oxide, aluminum oxide, aluminum fluoride and magnesium fluoride or a mixture of at least two of them, each of the first, second and third films is not made of one of Ti, Ta, Hf, Zr, Nb, Mo and Cr, a layer of the fourth film closest to a base material is the non-high refractive index layer. The fourth film satisfies 350<λ | 2011-03-31 |
20110075542 | OPTICAL INFORMATION RECORDING/REPRODUCING OPTICAL SYSTEM AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - An optical information recording/reproducing optical system, comprising a light source; an optical element converting a laser beam into a substantially collimated beam; and an objective lens, wherein a wavelength λ (unit: nm) of the laser beam falls within a range of 400<λ<410, the optical element and the objective lens are made of same resin materials or different resin materials having a glass transition temperature of Tg>115° C., each of optical surfaces is configured not to have an optical thin film which contains at least one of or elements of titanium, tantalum, hafnium, zirconium, niobium, molybdenum and chromium, each of optical surfaces of the optical element is provided with an antireflection film made of one of or a mixture of at least two of silicon oxide, aluminum oxide, aluminum fluoride and magnesium fluoride, and a following condition is satisfied. | 2011-03-31 |
20110075543 | OBJECT LENS, OPTICAL PICKUP, AND OPTICAL DISC DEVICE - An optical pickup includes: a first emitting unit to emit an optical beam of a first wavelength; a second emitting unit to emit an optical beam of a second wavelength; a third emitting unit to emit an optical beam of a third wavelength; an object lens to condense optical beams emitted from the first through third emitting units onto a signal recording face of an optical disc; and a diffraction unit provided on one face of an optical element or the object lens positioned on the optical path of the optical beams of the first through third wavelengths; wherein the diffraction unit includes a generally circular first diffraction region provided on the innermost perimeter, a ring zone shaped second diffraction region provided on the outer side of the first diffraction region, and a ring zone shaped third diffraction region provided on the outer side of the second diffraction region. | 2011-03-31 |
20110075544 | OPTICAL PICKUP DEVICE - An optical system of an optical pickup device includes an astigmatism element which imparts astigmatism to BD light reflected on BD and CD light reflected on CD, and a spectral element which disperses four light fluxes of BD light and four light fluxes of CD light by diffraction, the four light fluxes of BD light and the four light fluxes of CD light being obtained by dividing the BD light reflected on the BD and the CD light reflected on the CD by a first straight line parallel to a converging direction by the astigmatism element, and a second straight line perpendicular to the first straight line. A photodetector of the optical pickup device is provided with first and second sensor groups for respectively receiving the four light fluxes of BD light and the four light fluxes of CD light dispersed by the spectral element. | 2011-03-31 |
20110075545 | OPTICAL PICKUP DEVICE - An optical pickup device is provided with a spectral element which imparts diffraction in such a manner that four light fluxes of the first laser light are separated from each other, when a light flux of the first laser light and a light flux of the second laser light reflected on a recording medium having laminated recording layers and servo layers are divided into four by a first straight line in parallel to a converging direction by an astigmatism element, and a second straight line perpendicular to the first straight line, and that the four light fluxes of the first laser light propagate on an outer side than the light flux of the second laser light; and a photodetector including a first sensor group which receives the first laser light, and a second sensor group which receives the second laser light. | 2011-03-31 |
20110075546 | Objection Lens and Optical Pick-Up Device - Provided are an optical pickup apparatus and an objective lens which can appropriately record and/or reproduce information on three types of discs with different recording densities and improve the light-utilization efficiency using a simple structure. A first optical path difference providing structure is formed on an optical surface of the objective lens. The first optical path difference providing structure is a step structure in which plural ring-shaped step units each including the same number of steps are arranged concentrically about the optical axis as the center. The width w | 2011-03-31 |
20110075547 | Motor and disk drive apparatus - There is provided a motor. The motor includes a shaft rotatably installed and supported by a sleeve, a rotor case coupled with the shaft and on which a disk is mounted, and a pressure difference generation portion disposed in a space between the disk and the rotor case and generating a pressure difference using airflow in the space. | 2011-03-31 |
20110075548 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the first light reflecting layer is smaller than the thickness of the second light reflecting layer. | 2011-03-31 |
20110075549 | FAST PROTECTION PATH ACTIVATION USING CONTROL PLANE MESSAGES - A method, performed in a network that includes a group of nodes, includes identifying a path through a set of the nodes, where each node, in the set of nodes, has a data plane and a control plane; establishing a control plane tunnel, associated with the path, within the control plane of the nodes in the set of nodes; establishing a data plane tunnel, associated with the path, within the data plane of the nodes in the set of nodes, where the data plane tunnel is associated with the control plane tunnel and established through the same set of nodes; and transmitting a control message through the control plane tunnel to change a state of the data plane tunnel. | 2011-03-31 |
20110075550 | Method of M:1 Protection - An apparatus comprising a first segment endpoint bridge (SEB) configured to couple to a second SEB via a plurality of path segments, wherein the path segments comprise a working segment and a plurality of candidate protection segments, wherein the candidate protection segments comprise a protection segment that is configured to protect the working segment, wherein the candidate protection segments other than the protection segment do not protect the working segment, wherein only one first state variable is used to maintain each of the candidate protection segments other than the protection segment, and wherein a plurality of second state variables are used to maintain each of the working segment and the protection segment. | 2011-03-31 |
20110075551 | APPARATUS AND METHOD FOR SETTING NETWORK ADDRESS IN PACKET COMMUNICATION SYSTEM - An apparatus and method for a connection method of a support sub-layer in a packet communication system are provided. In the method, whether a timeout occurs is determined while communication is performed with a destination node. When the timeout occurs, a first connection to the destination node is tried using a first address set having a highest priority in an address management table. When the first connection fails, a second connection to the destination node is tried in a pipeline manner on the basis of address sets inside the address management table. Valid address sets are generated via the second connection. | 2011-03-31 |
20110075552 | Apparatus and method for controlling data communication - In a communication apparatus, a receive data processor receives data and retrieves a group data record corresponding to the received data out of a group data memory. A forwarding processor forwards the received data according to the group data record retrieved by the receive data processor. The group data memory stores group data records which associate protection group identifiers with path selection data. The protection group identifiers each identify a protection group that provides logical paths constituting a redundant logical path for transporting a group of data, and their corresponding path selection data specifies which logical path to use to forward data in that protection group. | 2011-03-31 |
20110075553 | CORE NETWORK DISASTER RECOVERY ARCHITECTURE - System(s), method(s), and device(s) that enable recovery of a core network (e.g., UMTS, GSM) during a disaster or other disruption are presented. A service recovery controller component can monitor connectivity in the communication network, can detect a disruption or loss of connectivity in the packet-switched (PS) core network, and, when a disruption or loss of connectivity is detected, can automatically re-route data or voice traffic between a radio network controller(s) and an internet protocol (IP) multimedia subsystem (IMS) core network via a direct interface(s) to enable communications to continue between communication devices. The service recovery controller component can continue to monitor connectivity in the communication network, and can detect when connectivity is re-established with the PS core network. When connectivity is re-established, the service recovery controller component can route data or voice traffic via the PS core network. | 2011-03-31 |
20110075554 | E-SPRING (G.8032) INTERWORKING TO PROVIDE ACCESS PROTECTION - A method of enabling a resilient interface between a first node and a G.8032 Ethernet ring. A Link Aggregation Group (LAG) comprising respective links is provided between the first node and at least two ring nodes of the Ethernet ring. An aggregation function is instantiated at the first node, for distributing subscriber traffic to the links of the LAG in a conventional manner. A first one of the ring nodes is designated as Active, and each of the other ones of the ring nodes are designated as Inactive. At each Inactive ring node, a logical block is imposed on its respective link of the LAG, such that subscriber traffic between the first node and the Ethernet ring is routed by the aggregation function only through the respective link between the first node and the Active ring node. | 2011-03-31 |
20110075555 | CONSISTENCY CHECKING FOR CREDIT-BASED CONTROL OF DATA COMMUNICATIONS - A credit-based method for controlling data communications in a computer system between a sender and a receiver coupled by an ordered communication link is described herein. A request for a credit check is transmitted from the sender to the receiver via the ordered communication link. An initial number of credits are allocated to the sender in a credit counter. A snapshot counter is set to a value of the credit counter and us updated as returned credits are received. A number of reported credits are determined based on a credit check response message received from the receiver. The returned credits are ordered relative to the credit check response message. The number of credits is checked for consistency based on a number of the snapshot counter and the number of reported credits. | 2011-03-31 |
20110075556 | SYSTEMS AND METHODS FOR DYNAMIC LOAD BALANCING IN A WIRELESS NETWORK - The present disclosure relates to systems and methods for dynamic load balancing in a wireless network, such as a wireless local area network (WLAN) and the like. Specifically, the present invention periodically provides dynamic load balancing of mobile devices associated with a plurality of wireless access devices. This may include determining an optimum load and instructing wireless access devices that are overloaded to disassociate some mobile devices based upon predefined criteria. This disassociation is performed in a manner to minimize disruption by disassociating mobile devices with low usage, with close proximity to underutilized wireless access devices, and mobile devices not currently operating critical applications, such as voice. | 2011-03-31 |
20110075557 | PROVIDING OFFLOADS IN A COMMUNICATION NETWORK - This disclosure relates to a system and method for offloading selected data to an alternate communication network. The offloading provides another route for selected packet traffic that can relieve the burden on a mobile operator's network, such as the backhaul and core networks. As the proliferation of data rich content and increasingly more capable mobile devices has continued, the amount of data communicated over mobile operator's networks has exponentially increased. Upgrading the existing network that was designed for voice calls is not desirable or practical for many mobile operators. A offload gateway is provided that inspects packets and determines those packets to offload to an alternate network as well as providing mobility management to allow for seamless handoffs and gateway relocations. | 2011-03-31 |
20110075558 | RATE SHAPING TRIGGERED DISCONTINUOUS TRANSMISSION IN WIRELESS COMMUNICATIONS - A modified token bucket algorithm in a rate shaper in a wireless communication network allows for the “borrowing” of tokens, creating the possibility of a token debt, or a token bucket with a negative Token Bucket Counter (TBC) value. In this modified token bucket algorithm, an incoming packet is passed along so long as the TBC is positive, even if the packet must “borrow” some tokens, driving the TBC negative. Subsequent incoming packets are stalled until the TBC reaches a positive value. The token bucket refills at a known rate; accordingly, the duration of traffic stalling, when the TBC is negative, is known. During this time, the UE is forced into DRX mode, saving battery power by not monitoring DPCCH for traffic that has been halted. The DRX, or sleep, mode may be invoked in several ways. | 2011-03-31 |
20110075559 | COMMUNICATION APPARATUS AND FRAME TRANSMISSION METHOD - A communication apparatus is connected to a network and identifies a flow of a frame input thereto and outputs the frame to a port. The communication apparatus includes: a flow identifying unit that obtains a flow identifier of the flow to which the frame belongs, and that obtains, based on the flow identifier, a hash rule corresponding to the flow identifier; a transfer destination controller that obtains by calculation a hash value of the frame by making use of the hash rule obtained by the flow identifying unit and that decides on an output port for the frame based on combination of the flow identifier and the hash value; and a frame output unit that outputs the frame to the output port decided by the transfer destination controller. | 2011-03-31 |
20110075560 | METHOD AND APPARATUS FOR PROCESSING LABELED FLOWS IN A COMMUNICATIONS ACCESS NETWORK - A system and method is provided for managing access communications between the service edge of a communications service provider and a customer. Access communications are carried in the form of carrier-tagged flows, the communications traffic being appended with carrier tags having significance to handling of the traffic through access network elements. A building aggregation system is provided which couples to customer premise equipment and interfaces customer flows to carrier-tagged flows used in the access network. | 2011-03-31 |
20110075561 | Method and Apparatus for Handling a Switch Using a Preferred Destination List - The present invention relates to switching technology, such Ethernet, where data switching is performed based on a collision-prone switching table ( | 2011-03-31 |
20110075562 | Rate Shaping For Wireless Communication Using Token Bucket That Allows Token Debt - A modified token bucket algorithm in a rate shaping function of a wireless communication network allows for the “borrowing” of tokens, creating the possibility of a token debt, or a token bucket with a negative Token Bucket Counter (TBC) value. In this modified algorithm, an incoming packet is passed along so long as the TBC is positive, even if the packet must “borrow” some tokens, driving the TBC negative. Subsequent incoming packets are stalled until the TBC reaches a positive value. In one embodiment, the modified token bucket algorithm is not applied to a separate rate shaper, but rather to a queue size limiter that operates with a scheduler on a single queue. The inventive scheduler and queue size limiter deliver fewer, larger packets for transmission, allowing for more efficient packing within transmission frames (reducing or eliminating required padding), and allowing other traffic to be scheduled, thus increasing system throughput. | 2011-03-31 |
20110075563 | METHODS AND APPARATUS FOR ENABLING RATE ADAPTATION ACROSS NETWORK CONFIGURATIONS - Systems and methods for implementing explicit congestion notification (ECN) across disparate networks, configurations, and protocols are disclosed. Local rate adaptation using ECN may be provided without relying on other operators to upgrade or ensure their networks are ECN transparent or ECN capable. | 2011-03-31 |
20110075564 | Methods and Apparatuses for Establishing M3UA Linksets and Routes - Methods and apparatuses, including computer program products, are described for establishing M3UA linksets and routes. The method includes generating, at a signaling gateway, a linkset that includes a plurality of M3UA links between two or more IP hosts on the signaling gateway and a single IP host on a signal transfer point. The method also includes configuring, at the signaling gateway, a route based on the linkset to direct messages from the signaling gateway to a single destination node. | 2011-03-31 |
20110075565 | SYSTEM AND METHOD FOR CONTROL NETWORK DEVICE - A control system and method for reducing the amount of power consumption of a communication network is provided. The amount of traffic usage and power consumption of communication equipment in the communication network is collected and energy efficiency of the communication equipment is calculated. An operation of the communication equipment and a communication path or routing of the communication network are controlled according to the calculated energy efficiency. Therefore, an operation of unnecessary communication equipment is controlled, thereby reducing the power consumption of the communication network. | 2011-03-31 |
20110075566 | Effective Bandwidth Path Metric and Path Computation Method for Wireless Mesh Networks with Wired Links - Enhanced mesh network performance is provided by computation of a path metric with respect to multi-hop paths between nodes in a mesh network and determination of a path through the mesh network that is optimal according to the path metric. Information is communicated in the mesh network according to the determined path. Nodes in the mesh network are enabled to communicate via one or more wireless links and/or one or more wired links. The path metric optionally includes an effective bandwidth path metric having elements (listed from highest to lowest conceptual priority) including an inverse of a sustainable data rate, a number of wireless links, and a number of wireless and wired links. The sustainable data rate is a measure of communication bandwidth that is deliverable by a path for a period of time. Accounting is made for interference between contiguous wireless links operating on the same channel. | 2011-03-31 |
20110075567 | METHODS, APPARATUS AND ARTICLES OF MANUFACTURE TO MONITOR COMMUNICATION PATHS IN COMMUNICATION SYSTEMS - Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. A disclosed example method includes identifying first and second inter-network communication links of a communication system, identifying a first plurality of router pairs associated with the first inter-network communication link, identifying a second plurality of router pairs associated with the second inter-network communication link, partitioning the first plurality of router pairs into a first subset of router pairs and a second subset of router pairs, partitioning the second plurality of router pairs into a third subset of router pairs and a fourth subset of router pairs, during a first time interval, performing first reachability tests for respective ones of the first and third subsets of router pairs, and during a second time interval, performing second reachability tests for respective ones of the second and fourth subsets of router pairs. | 2011-03-31 |
20110075568 | RESOURCE MANAGEMENT IN DYNAMIC NETWORK ENVIRONMENTS - A system comprises a communications network configured to support transmission of a plurality of communications streams and a resource manager communicatively coupled to the communications network and configured to provision resources of the communications network to the plurality of communications streams. The system may further comprise a performance test manager communicatively coupled to said communications network and configured to identify a communication stream from said plurality of communications streams, identify a test network path for said identified communication stream that is substantially free of other network traffic, and perform a performance test over said test network path. | 2011-03-31 |
20110075569 | OBTAINING PARAMETERS FOR MINIMIZING AN ERROR EVENT PROBABILITY - A set of one or more receiver parameters is adjusted. It is determined whether to adjust the set of receiver parameters. In the event it is determined to adjust the set of receiver parameters, a new set of values is generated for the set of receiver parameters using a cost function (where the cost function does not assume a noise signal in a receive signal to have a particular statistical distribution) and the set of receiver parameters is changed to have the new set of values. | 2011-03-31 |
20110075570 | SERVER APPARATUS, COMMUNICATION METHOD AND PROGRAM - Disclosed is a server apparatus that receives a stream containing at least a video signal from a first one of two or more terminals that take part to form a group of terminals, copies the received stream or packet in part or entirety thereof, and transmits the so copied stream or packet to those terminals that are different from the first terminal, includes a control packet generation/transmission unit which, in case other terminal takes part anew in the group of terminals halfway during the time of transmitting the copied stream or packet, transmits to the first terminal a command which orders the first terminal to transmit a non-predictive frame. | 2011-03-31 |
20110075571 | DISTRIBUTED VIRTUAL HOME AGENT FOR MOBILE INTERNET PROTOCOL - The present invention provides a method and apparatus for a distributed virtual home agent. One embodiment of the method includes implementing a first primary home agent on a first portion of a plurality of hardware elements that operate according to a mobile Internet Protocol (IP) and a second primary home agent on a second portion of the plurality of hardware elements. A first backup home agent is implemented on the second portion of the plurality of hardware elements and a second backup home agent is implemented on the first portion of the plurality of hardware elements. Packets addressed to the first or second primary home agent can be directed to both the first and second portions of the plurality of hardware elements so that states of the first and second backup home agents mirror states of the first and second primary home agents, respectively. | 2011-03-31 |
20110075572 | ROBUST MULTICAST BROADCASTING - A method and system for multicasting IPTV channels includes using both a designated and a redundant network routing device. When the designated routing device detects that an MCDN network connection to an IPTV multicast source is unavailable, the designated routing device reduces its designation priority to a lower value. A message is sent to the redundant routing device with an instruction to increase its designation priority to a higher value. After the designation priorities have been modified, the designated routing device may serve as a new redundant routing device, while the redundant routing device may serve as a new designated routing device. The routing devices may remain in the new configuration, even after interrupted network connections are restored. | 2011-03-31 |
20110075573 | RING NETWORK SYSTEM AND COMMUNICATION PATH CONTROL METHOD - A control node includes: a monitoring packet transmission section for transmitting a monitoring packet; a monitoring packet reception section for receiving a monitoring packet; an adjustment section for selecting a redundant node from a non-control nodes; a packet generation section for generating a setup packet for specifying the redundant node out of the non-control nodes in accordance with information about the redundant node selected by the adjustment section; and a packet transmission section for transmitting the setup packet to the non-control node. The non-control node includes a control section that acquires information about the traffic upon receiving the monitoring packet, transmits a monitoring packet after acquisition of the traffic, and specifies the non-control node as the redundant node based on information about the redundant node contained in the setup packet upon receiving the setup packet. | 2011-03-31 |
20110075574 | PATH PROTECTION BY SHARING CONTINUITY CHECK MESSAGES - A method for managing protection of a plurality of defined paths in a communication system including listing the defined paths, each item in the list including a defined path identifier, a defined path ingress node, a defined path egress node, and a defined path protection period, wherein some of the defined paths share an ingress node and an egress node, managing a sending of Continuity Check Messages (CCMs) along at least some of the defined paths, such that a CCM is sent every protection period, and for at least a plurality of the defined paths which share an ingress node and an egress node, managing a sharing of the protection of the plurality of the defined paths, the sharing including sending one set of CCMs, shared by the plurality of the defined paths, at a frequency based, at least in part, on a shortest one of the protection periods of the plurality of the defined paths. A method for protecting a plurality of paths which share at least one leg in a communication network, including sharing, between the paths, Continuity Check Messages (CCMs) for at least the shared leg. Related apparatus and methods are also described. | 2011-03-31 |
20110075575 | METHOD AND DEVICE FOR SENDING A TRANSMISSION SIGNAL, IN PARTICULAR A MOBILE RADIO SIGNAL - In sending a transmission signal, in particular a mobile radio signal, to a receiver, the transmission signal is processed according to a modulation coding scheme MCS and subjected to amplitude limited to obtain a specified ratio of maximum to average transmission power PAR. A limit value EVM for an error in the transmission signal is matched to transmission conditions for the transmission signal, according to demand, in such a way that a maximum signal to interface ration is achieved at a receiver. | 2011-03-31 |
20110075576 | WIRELESS LINK QUALITY MONITORING IN NETWROK-ENABLED TVs - A networked TV gathers information pertaining to the quality of a wireless link over which the TV receives streamed multimedia content, and presents an indication of the quality to a user, selectively blocks content from display if the quality falls below a threshold, and/or reports poor link quality to a network server for diagnostic action by technical personnel. | 2011-03-31 |
20110075577 | SYSTEMS AND METHODS TO MEASURE THE PERFORMANCE OF A DE-JITTER BUFFER - Systems and methods to measure the performance of a de-jitter buffer are disclosed. In a described example, a method to measure adaptive de-jitter buffer performance includes transmitting a known audio signal via a plurality of packets over a packet-based network, recording a received signal based on the known audio signal, and analyzing the recorded signal to determine one or more of a lower de-jitter buffer size, an upper de-jitter buffer size, a de-jitter buffer expansion speed, or a de-jitter buffer contraction speed based on the recorded signal and the known signal. The example method further includes comparing the one or more of the lower de-jitter buffer size, the upper de-jitter buffer size, the expansion speed, or the contraction speed to a performance requirement, and correcting communication network performance based on the comparison. | 2011-03-31 |
20110075578 | METHOD AND SYSTEM FOR SETTING ROUTING PATH CONSIDERING HIDDEN NODE AND CARRIER SENSE INTERFERENCE, AND RECORDING MEDIUM THEREOF - Disclosed are a method and a system for setting a routing path in consideration of hidden nodes and carrier sense interference. | 2011-03-31 |
20110075579 | Method and apparatus for delay management in wireless communication - A method is provided for determining an allowed delay budget for the air interface portion of a communications link, the communications link comprising one or more air interface portions and a network portion. In particular, the method of the invention operates in a wireless communication system comprising an air interface portion and a network portion, and includes (1) determining a network delay for calls in the system on a per-call basis; and (2) apportioning an air-link delay budget for ones of calls in the system so as to maintain approximately equal total delay for all calls. | 2011-03-31 |
20110075580 | SYSTEM AND METHOD FOR DISTRIBUTED CONTROL OF SPECTRUM POWER IN A MULTI-CELL COMMUNICATION SYSTEM - A system and method for distributed control of spectrum power in a multi-cell communication system are provided. A plurality of cells included in a multi-cell communication system may be grouped into a plurality of groups. Cells included in a first group may iteratively calculate spectrum powers to perform dynamic spectrum management (DSM) scheme in calculation sub-frames. The cells included in the first group may also perform a user scheduling. Spectrum powers determined by cells included in a second group and user scheduling results of the cells in the second group may be held static. | 2011-03-31 |
20110075581 | Wireless transmission system, wireless communication device and wireless transmission method - Disclosed herein is a wireless transmission system including a plurality of antenna pairs; a demodulation functional unit; and a transmission characteristic correction unit. The plurality of antenna pairs each including a transmission antenna and a reception antenna. A wireless signal transmitted from a transmission antenna directly arrives as a desired wave at a corresponding reception antenna. Meanwhile, a wireless signal transmitted from a different transmission antenna directly arrives as an unnecessary wave at the reception antenna. The demodulation functional unit corresponding to each antenna pair demodulates a modulation signal received by the reception antenna. The transmission characteristic correction unit carries out correction calculation based on a transmission characteristic of a transmission space between the transmission and reception antennae based on demodulation signals demodulated by the demodulation functional units to acquire an output signal corresponding to a transmission subject signal. | 2011-03-31 |
20110075582 | DELAY TIME MEASUREMENT APPARATUS, STORAGE MEDIUM STORING DELAY TIME MEASUREMENT PROGRAM AND NETWORK SYSTEM - A CPU executes a process including determining a core node among plural relay nodes on a basis of route information, acquiring a first and a second packets flowing between a server and a terminal apparatus, the second packet being transmitted on a basis of the first packet, calculating a first delay time on a basis of the first and the second packets, the first delay time relating to packet transmission between the server and the terminal apparatus, transmitting a third packet to the core node, receiving a response to the third packet from the core node, calculating a second delay time on a basis of the third packet and the response, the second delay time being a delay time of the core node, and calculating a third delay time being a delay time of an end node on a basis of the first and the second delay times. | 2011-03-31 |
20110075583 | ROUTE CONTROL METHOD AND ROUTE CONTROL SYSTEM - A route control system includes a status measuring unit, a cost management unit, a route determining unit, and a route setting unit. The status measuring unit checks a status of each node included in a network. The status is a wake state or a sleep state. The cost management unit updates a link cost for a link connected to a node in the wake state to a value smaller than any link cost for a link connected to a node in the sleep state. The route determining unit determines an optimum route connecting a first terminal to a second terminal. A sum of the link costs for the optimum route is lowest among the link costs for other available routes connecting the first terminal to the second terminal. The route setting unit sets a requested data flow in the optimum route. | 2011-03-31 |
20110075584 | SWITCH DEVICE AND LOOP DETECTION METHOD IN A RING NETWORK SYSTEM - A switch device used in a ring network operating based upon a protocol prescribed to prevent a loop from occurring includes: a transmission section that periodically transmits a predetermined control frame defined in the protocol out to a communication line in the ring network; a reception section that receives a control frame from the ring network; and a determination section that determines the occurrence of a loop when source address information in the received control frame is identical to address information on the transmission section and also when the received control frame is a predetermined control frame defined in the protocol. | 2011-03-31 |
20110075585 | RELIABILITY METRICS IN AN IP NETWORK - Embodiments of the present invention are directed to characterizing reliability associated with a network. To characterize the reliability, an edge-pair reliability metric is determined for service edge point pairs. An end-to-end reliability metric is computed based on a distribution of the edge-pair reliability metric for the service edge point pairs and a threshold value. | 2011-03-31 |
20110075586 | Method of Inter-System Coexistence and Spectrum Sharing for Dynamic Spectrum Access Networks-On-Demand Spectrum Contention - This invention relates to cognitive radio based wireless communications of dynamic spectrum access networks, and more particularly to a method of addressing inter-systems (cells) coexistence and spectrum sharing. The described method of spectrum sharing called On-Demand Spectrum Contention, integrates Dynamic Frequency Selection and Transmission Power Control with iterative on-demand spectrum contentions and provides fairness, adaptability, and efficiency of spectrum access for dynamic spectrum access systems using active inter-system coordination. | 2011-03-31 |
20110075587 | OFDM SYSTEM WITH REVERSE LINK INTERFERENCE ESTIMATION - A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain. | 2011-03-31 |
20110075588 | PACKET LATENCY ESTIMATION - An intermediary node is adapted for receiving a sequence of packets from a server, wherein the intermediary node comprises a time estimator adapted for performing the following steps—resolving the sequence number (k) and time of arrival to the intermediary node for at least a plurality (q) of incoming packets; establishing the frame period of the incoming packets (T); establishing a sequence of normalized packet arrival times (e | 2011-03-31 |
20110075589 | METHODS AND APPARATUS FOR SOLICITED ACTIVATION FOR PROTECTED WIRELESS NETWORKING - Methods and apparatus that enable solicited access to a secure wireless network having complex security protocols. In one embodiment, such solicited access is performed using a streamlined or reduced number of steps and includes an exemplary active/passive scanning protocol and use of an optimized service discovery protocol (SDP). Furthermore, multiple aspects of the invention are directed to improving and enhancing user experience, including a reduction of “human” interaction requirements for secure network operation (such as changing settings, entering addresses, etc.), and furthermore, integrated utilization of human readable text. | 2011-03-31 |
20110075590 | METHODS AND APPARATUS FOR DISCOVERING HOSTS ON AN IPV6 NETWORK - Methods and apparatus for discovering hosts on an Internet Protocol (IP) version 6 (IPv6) network are disclosed. An example implementation includes probing a network to determine an Internet Protocol (IP) version 4 (IPv4) address that is in use on the network; determining a Media Access Control (MAC) address associated with the IPv4 address; determining a local-prefix; determining a first IP version 6 (IPv6) address, the first IPv6 address including the MAC address and the local-prefix; determining a second IPv6 address, the second IPv6 address including the MAC address and the local-prefix and the second IPv6 address being different than the first IPv6 address; probing the network to determine if the first IPv6 address is in use; probing the network to determine if the second IPv6 address is in use; and storing an indication of whether at least one of the first or second IPv6 address is in use. | 2011-03-31 |
20110075591 | METHOD AND APPARATUS FOR LOOKING UP CONFIGURATION INFORMATION FOR A NETWORK NODE - One embodiment of the present invention provides a system for looking up location-specific configuration information for a network node or a subnet. During system operation, a network node creates a query message containing a key that comprises an Internet Protocol (IP) prefix and a string, wherein the IP prefix identifies the network node or the subnet, and the string specifies the type of configuration information. The network node then sends the query message to a name server, which is part of a distributed system that provides a global naming service, wherein the name server additionally stores configuration information. Finally, the network node receives a response message from the name server, wherein the response message contains the requested configuration information. | 2011-03-31 |
20110075592 | Method of Data Delivery Across a Network - The present invention provides a method of preserving packet ordering in a multi-path network having a plurality of network elements interconnected by network links wherein for each data packet arriving at an egress port of the multi-path network, a delivery acknowledgement is issued by the egress port and is transmitted across the network following in reverse the path taken by the data packet being acknowledged, and wherein the state of each link in the path taken by the data packet being acknowledged is updated by the acknowledgement. The present invention further provides a multi-path network for use in a bridge, switch, router, hub or the like, the multi-path network comprising a plurality of network ports; a plurality of network elements; and a plurality of network links interconnecting the network elements and the network ports for transporting data packets, each network egress port including acknowledgement means for issuing a delivery acknowledgement in response to receipt of a data packet and each network element being adapted to transmitted a delivery acknowledgment in the opposite direction along the path taken by the data packet being acknowledged and being further adapted to update the state of at least one of the network links to which it is connected in response to receipt of an acknowledgement. The invention further provides an Ethernet bridge or router incorporating such a multi-path network. | 2011-03-31 |
20110075593 | WIRELESS COMMUNICATION TRANSCEIVER AND MODE-SWITCH DEVICE THEREOF - A wireless communication transceiver and a mode switch device thereof. The transceiver includes: a first band transmission path; a first band reception path; a second band transmission path; a second band reception path; a path switch and a control unit. In a dual band time division duplexing mode, the control unit controls the path switch so that the path switch connects a received radio frequency signal from an antenna to the first band reception path, and connects a transmitted radio frequency signal from the second band transmission path to the antenna in an odd cycle or an even cycle; and controls the path switch so that the path switch connects a received radio frequency signal from the antenna to the second band reception path, and connects a transmitted radio frequency signal from the first band transmission path to the antenna in another odd cycle or another even cycle. | 2011-03-31 |
20110075594 | Uplink Power Control in a TDD Communication System - A method performed in a wireless network includes receiving signals within a downlink frequency domain to enable channel estimation and measuring two or more signals only for two or more frequency bands of the downlink frequency domain that correspond to two or more uplink frequency bands associated with a scheduling grant or channel allocation that correspond to physical uplink channel frequency bands. The method also includes calculating path loss values for each of the frequency bands and calculating a total power based on the path loss values corresponding to the frequency bands. The method further includes determining a power allocation per frequency band based on the calculated total power to be applied to an uplink transmission and allocating the total power. | 2011-03-31 |
20110075595 | Bidirectional wireless communication system, wireless communication apparatus, and bidirectional wireless communication method - A bidirectional wireless communication system includes: a first wireless communication apparatus for bidirectional communication configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and transmit a resultant transmission signal; and a second wireless communication apparatus, having an oscillator configured to oscillate a signal having a free-running oscillation frequency, configured to inject a reception signal received from the first wireless communication apparatus into the oscillator, receive the reception signal while variably controlling the free-running oscillation frequency of the oscillator of the second wireless communication apparatus, detect whether the free-running oscillation frequency of the signal of the oscillator of the second wireless communication apparatus has entered the frequency range up to the injection locking to be frequency-locked with a carrier frequency of the injected reception signal, and generate a communication enable signal. | 2011-03-31 |
20110075596 | Resource Overbooking - In a multi-radio device it is determined that a first radio application requests change to a first operational state during a time at which a second radio application is in or requests a second operational state. A local memory is accessed to determine a first and a second budget of resources for the respective first and second operational states of the respective first and second radio applications. There is at least one common resource among the first and second budgets. From resource allocation rules stored in the memory is determined that each of the common resources are mutually exclusive as between the first and second operational states of the respective first and second radio applications. As a result of the determining from the resource allocation rules, the request of the first radio application is granted by allocating resources according to the first budget for the first operational state while resources according to the second budget are allocated for the second operational state. | 2011-03-31 |
20110075597 | MICROWAVE RADIO COMMUNICATIONS DEVICE AND RELATED METHOD OF OPERATION AND NETWORK ARRANGEMENT - The present invention provides for a microwave radio communications user device arranged for communication with a base station and for receiving and decoding an MPDU for use in initial ranging signalling with said base station, the device being further arranged to retrieve data in a downlink-sub-frame from the base station serving to discriminate between MPDUs intended for different user devices. | 2011-03-31 |
20110075598 | METHOD AND APPARATUS TO SHORTEN THE TIME TO CONNECT TO A NETWORK - A computer platform and computer method may, when a computer platform is in a low-power or sleep mode, operate a wireless communication interface unit to scan for a set of available networks and record the set of networks. When the platform is changed to an operating mode, the platform may use the set of available networks to connect to a network. | 2011-03-31 |
20110075599 | METHOD AND APPARATUS FOR MULTICAST GROUP MANAGEMENT - It provides a method for multicast group management. The apparatus determines a request for joining a multicast service derived during establishment of a connection for carrying multicast service between a first device and a second device, and it sends a message indicative of joining said multicast service based on the request for joining if the multicast service is not available in said network device. As a consequence, it reduces the messages exchanged in unreliable wireless connection so as to reduce the probability of service interruption. | 2011-03-31 |
20110075600 | METHOD OF TRANSMITTING MULTICAST BROADCAST SERVICE - A method of a base station transmitting Multicast Broadcast Service (hereinafter referred to as MBS) includes transmitting MBS configuration information, including information about an MBS region which is a resource region to which MBS-related information is allocated and information about an MBS MAP, to a terminal and transmitting MBS data to the terminal through the MBS region. The information about the MBS region includes location information and a transmission parameter of the MBS region. The MBS MAP includes an MBS configuration information change indication which indicates whether the MBS configuration information is expected to change from first MBS configuration information to second MBS configuration information. MBS is effectively and persistently managed in a mobile wireless communication system supporting MBS. | 2011-03-31 |
20110075601 | Systems and Methods for Adaptive Interference Cancellation Beamforming - Methods of operating a transceiver including an antenna having a plurality of antenna feed elements are disclosed. The methods include receiving a plurality of samples of a receive signal from the plurality of antenna feed elements, estimating locations of a plurality of signal sources from the plurality of receive signal samples, identifying a plurality of interference sources from among the plurality of signal sources, generating a plurality of antenna feed element weights w | 2011-03-31 |
20110075602 | SYSTEMS AND METHODS FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS - A method of extracting automatic identification system (AIS) message segments from AIS signals received by a satellite. The method includes: (a) receiving AIS signals from satellite antennas; (b) generating multiple versions of the AIS signals; (c) extracting message segments contained within each of the AIS signals using one or more AIS receivers; (d) sorting the message segments by time; and (e) deleting any duplicate message segments. Multiple versions of the AIS signals may be generated by one or more of the following methods: (i) processing the AIS signals multiple times, each time with different AIS receiver parameter settings; (ii) splitting each signal into multiple signals and filtering each of the multiple signals separately; (iii) receiving multiple AIS signals and combining them with different phases and amplitudes to produce a plurality of combined AIS signals; and (iv) removing extracted message segments from the received AIS signals and reprocessing the modified AIS signals. | 2011-03-31 |
20110075603 | MEDIUM ALLOCATION IN A DISTRIBUTED NETWORK - A method of network operations comprises conducting communication activities at a first network device using a shared network medium and having a first coverage area, wherein the communication activities comprise broadcasting a data transmission reservation or receiving a data transmission reservation of another network device during a beacon period; and conducting communications with the first network device at a second network device using the shared network medium; wherein the second network device is configured to provide a second coverage area that is substantially contained within the first coverage area and wherein the second network device does not monitor network communications during the beacon period. | 2011-03-31 |
20110075604 | MEDIUM ACCESS CONTROL FOR WIRELESS SYSTEMS - A method for execution by a mobile station (MS) in a mobile communications network, the method comprising: receiving a first MS identifier from the network during a ranging operation involving the MS; using the first MS identifier to extract the contents of at least one message received from the network during said ranging operation; using a second MS identifier, different from the first MS identifier, to extract the contents of at least one message received from the network after said ranging operation is complete. Also, a method for execution by the base station, comprising: outputting a first message destined for the MS, the first message including a first identifier for use by the MS during a ranging operation; determining that said ranging operation is complete; outputting a second message destined for the MS, the second message including a second identifier for use by the MS in subsequent communication with the network. | 2011-03-31 |
20110075605 | Transmitting Data Packets In Multi-Rat Networks - In order to transmit data packets in multi-RAT networks, a method and a system of network controllers are proposed comprising:
| 2011-03-31 |
20110075606 | Wireless communication system, wireless communication apparatus, and wireless communication method - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 2011-03-31 |
20110075607 | Multi-user null data packet (MU-NDP) sounding within multiple user, multiple access, and/or MIMO wireless communications - Multi-user null data packet (MU-NDP) sounding within multiple user, multiple access, and/or MIMO wireless communications. Within communication systems including multiple wireless communication devices (e.g., one or more APs, STAs, etc.), channel sounding of the selected communication links between the various wireless communication devices is performed. A MU-NDP announcement frame is transmitted to and received by various wireless communication devices indicating which of those wireless communication devices (e.g., one, some, or all) are being sounded. Then, respective NDP sounding frames are transmitted via the communication links corresponding to those wireless communication devices (e.g., one, some, or all) are being sounded, and sounding feedback signals are subsequently sent back to the original transmitting wireless communication device. In some instances, after transmission of the MU-NDP announcement frame, a clear to send (CTS) is sent from at least one of the wireless communication devices thereby precipitating the transmission of the NDP sounding frames. | 2011-03-31 |
20110075608 | METHOD, SYSTEM, AND DEVICE FOR NETWORK SELECTION - A method, system, and device for network selection are provided. The method for network selection includes the following steps. After network selection is triggered, a network selection list stored in a Universal Integrated Circuit Card (UICC) and a network selection list stored in a Mobile Equipment (ME) are read, where the UICC is embedded in the ME and accessible to the ME. Network selection is performed according to the network selection list stored in the UICC and the network selection list stored in the ME. Also, a method for network selection through a network selection policy is added and methods for implementing a type and a data structure of a network selection policy as well as a method for network selection based on a network selection policy are provided, so that network selection can be controlled more flexibly, a terminal can locate a target network faster, and time consumed for the network selection is reduced. | 2011-03-31 |
20110075609 | CALL FLOW SYSTEM AND METHOD FOR USE IN A VOIP TELECOMMUNICATION SYSTEM - A method of establishing a communication link between a mobile terminal of a wireless network and a subscriber of a network, such as an enterprise network, and/or a residential network. | 2011-03-31 |
20110075610 | MOBILE TERMINAL, BASE STATION DEVICE AND MOBILE COMMUNICATION SYSTEM - A mobile communication system is provided with a base station device and a mobile terminal, which mutually perform radio communication. The system is also provided with a cell search part provided in the mobile terminal conducting a cell search, and an operation part configured to calculate a period for another cell search based on a period required for the cell search. The cell search part conducts the another cell search during the period calculated by the operation part. | 2011-03-31 |
20110075611 | METHODS AND APPARATUS FOR ERROR CORRECTION FOR COORDINATED WIRELESS BASE STATIONS - Methods and apparatus for coordinated error correction among a set of wireless base stations in communication with one another. In one embodiment, the wireless base stations are part of a cellular network having various cellular base stations (including a serving base station, and multiple supplemental base stations), and transmit multiple redundant versions of a transport block using a Hybrid Automatic Repeat Request (HARQ) based scheme. The aggregate of the multiple redundant versions of the transport block are soft combined and acknowledged (ACK) or not-acknowledged (NACK) by the cellular equipment. The serving base station and supplemental base station devices dynamically configure the bundled acknowledgment operation based on various desired operational attributes relating to the operational parameters of the network. | 2011-03-31 |
20110075612 | METHOD AND APPARATUS FOR AD HOC VENUE-CAST SERVICE - A method, apparatus, and system for providing ad hoc venue-cast content to a plurality of receiving access terminals within a venue boundary. Ad hoc content may be generated at an access terminal, transmitted to a venue-cast server, and broadcast to a plurality of venue-cast receiving access terminals within a venue. In addition to broadcasting the ad hoc content, a notification is given to the plurality of receiving access terminals, notifying them regarding the availability of the ad hoc content. | 2011-03-31 |
20110075613 | METHOD AND SYSTEM FOR DYNAMIC BANDWIDTH ALLOCATION BETWEEN NETWORKS - A method and system for a communication device having a network interface card (NIC) for communicating with two networks to dynamically allocate bandwidth between or among the networks. | 2011-03-31 |
20110075614 | METHOD AND APPARATUS FOR PROVIDING APPLICATION SERVICE BETWEEN A FIRST PROTOCOL AND A SECOND PROTOCOL - Application service is provided for a subscriber unit (SU), employing a first protocol, in a communication network employing a second protocol. The method includes receiving a CAI OTAR message from the SU. The CAI OTAR message includes at least a key management message (KMM) and a CAI header of the SU. The method then includes determining that the first protocol employed by the SU is different from the second protocol associated with the communication network based on the received CAI OTAR message. The method further includes creating a key management message (KMM) preamble, associated with the second protocol, based on at least one of the CAI header and configuration information of the SU, and creating a data link independent (DLI) OTAR message associated with the second protocol. The DLI OTAR message includes the received KMM. The method finally includes encapsulating the DLI OTAR message with the created KMM preamble, and sending the encapsulated DLI OTAR message to a key management facility (KMF) unit operating at a second protocol. | 2011-03-31 |
20110075615 | RECURSIVE REALIZATION OF POLYNOMIAL PERMUTATION INTERLEAVING - Systems and methodologies are described that facilitate automatically generating interleaved addresses during turbo decoding. An efficient recursive technique can be employed in which layers of nested loops enable the computation of a polynomial and a modular function given interleaved parameters “a” and “b” from a look up table. With the recursive technique, interleaved addresses can be generated, one interleaved address per clock cycle which can maintain turbo decoding performance. | 2011-03-31 |
20110075616 | Baseband unit interfacing between baseband section and radio frequency section and method thereof - The baseband unit includes a first Radio Frequency (RF) coverage unit, a second RF coverage unit, and an interface unit. The first RF coverage unit is configured to communicate with RF devices according to a first communication protocol. The second RF coverage unit is configured to communicate with the RF devices according to a second communication protocol different than the first communication protocol. Further, the interface unit is configured to selectively interface one of the first and second coverage units with the RF devices. | 2011-03-31 |
20110075617 | Pilot signal allocation method and apparatus for multi-user wireless systems - A construction is provided for uplink pilot signals in a cellular network. Three sets of pilot signals are defined, having orthogonality properties that lead to reduced inter-cell interference. In example embodiments, the network has a reuse factor of 3 for pilot signals, with sets U, V, and W of pilot signals assigned to cells in respective reuse classes. The pilots of each set form an orthogonal basis. Some pilots of each class, i.e. those which will generally be assigned to mobile stations near the cell edges, will also form an orthogonal basis with some pilots of each of the other classes. | 2011-03-31 |