16th week of 2011 patent applcation highlights part 17 |
Patent application number | Title | Published |
20110090849 | Approach for QoS control on un-wanted services (e.g. VoIP or Multimedia) over wireless and wireless IP network - An apparatus in one example has: at least one access network operatively coupled to an access and data network; and a controller in the access and packet data network, the controller determining access of data flow from the access network through the access and data network. Embodiments allow access or packet data service providers to control which types of services are allowed over their respective access and packet data networks. | 2011-04-21 |
20110090850 | System and Method for Adaptive Frame Size Management in a Wireless Multihop Network - A system and method for adaptively managing frame size in a wireless multihop network is disclosed. In one embodiment, a packet is transmitted from a source to a destination. A acknowledgement packet is received and a successful acknowledgement packet counter is incremented if the acknowledgement packet arrives prior to a time-out of a timer. A frame size is increased if the successful acknowledgement packet counter reaches a specified value. If the acknowledgement packet arrives after the time-out of the timer, the successful acknowledgement packet counter is reset and the frame size is decreased. These procedures can be repeated until the frame size is greater than or equal to a maximum frame size or less than or equal to a minimum frame size. | 2011-04-21 |
20110090851 | Method and System for Transmission of Fragmented Packets on a Packet-Based Communication Network - The present invention provides a method and system for the identification and discovery of the lowest maximum transmission unit (MTU) size for transmission packets on some or all of the transmission path nodes. Different methods and protocols are described in the present patent application to support the identification and discovery of the lowest maximum transmission unit (MTU) size for fragmented transmission packets. | 2011-04-21 |
20110090852 | ENHANCED APN RESOLUTION - The present invention relates to a solution for resource allocation and in particular in relation to resolving a gateway. The solution according to the present invention uses an infix in an access point name, comprising a geographical area, in communicating with a domain name server. The infix is chosen from a list comprising unique combinations of selection criteria. | 2011-04-21 |
20110090853 | METHOD AND APPARATUS FOR DYNAMIC SPECTRUM ACCESS - Apparatus and methods are disclosed for improving wireless and other network communications, e.g., through improving resource utilization, which may comprise the steps of accumulating channel modeling information relating to channel performance; calculating a channel parameter threshold based on the accumulated channel modeling information, whereby the channel parameter, as measured, being above the threshold indicates the channel is a good channel; adjusting traffic over a selected good channel to improve performance of the network or a network resource. The network resource may comprises battery life for devices operating on the network, data rate for devices operating on the network, constituting or reconstituting ad hoc networks comprising nodes separated by multiple hops, continuity of connectivity within a single communication link over the network, etc. The apparatus and method of operating the apparatus may also comprise dynamically performing the adjusting step resulting from repeating the calculating step over time. | 2011-04-21 |
20110090854 | DOWNLINK AND UPLINK RESOURCE ELEMENT MAPPING FOR CARRIER EXTENSION - A method, an apparatus, and a computer program product for wireless communication are provided in which resource elements compatible with multiple different communication protocols, which may not be compatible with one another, may be mapped to a radio frame. For example, in an LTE network, equipment configured to be compatible with 3GPP release 8 standards (herein referred to as Rel. 8) may have certain limitations as to what bandwidth is available for use and access, while these limitations may not apply to later releases of LTE standards after Rel. 8 (herein referred to as “New”). Thus, a system bandwidth can be extended to include an extension portion, to which resource elements compatible with the New protocol may be mapped, and a non-extension portion, to which resource elements compatible with either Rel. 8 or the New protocol may be mapped, providing an effective multiplexing of system resources. | 2011-04-21 |
20110090855 | METHOD FOR MANAGING RESOURCES IN HIGH CAPACITY WIRELESS COMMUNICATION SYSTEM - Provided is a method for managing resource in a high capacity wireless communication system capable of communicating with two or more users in a multi-input multi-output (MIMO) scheme when a base station transmits data. The includes: transmitting a MU-MIMO request-to-send (RTS) message to stations intending to transmit data in the MIMO scheme, and sequentially receiving a clear-to-send (CTS) message from stations intending to receive the data; transmitting a transmission ACK message to the stations, wherein the transmission ACK message includes information which prevents data collision during a time of data transmission to the stations and ACK signal; and configuring data to be transmitted to the stations into aggregated packets (A-MPDUs), transmitting the A-MPDUs to the stations in the MIMO scheme, and receiving a block ACK message from the stations. | 2011-04-21 |
20110090856 | METHOD OF EFFICIENT RANGING PROCEDURE CONSIDERING RANGING PURPOSE IN BROADBAND WIRELESS ACCESS SYSTEM - A broadband wireless access system and, more particularly, a method for a mobile station and a base station to perform an efficient ranging procedure considering a ranging purpose and a device for performing the same are disclosed herein. A method of a mobile station for performing ranging in a broadband wireless access system, the method includes the steps of transmitting a first ranging preamble code for requesting ranging to a base station through a first ranging opportunity of a first frame, and, when a first message is received from the base station before a timer indicating a limited time point is expired, wherein the first message including a response to the first ranging preamble code is transmitted during the limited time point, determining whether or not the ranging request is successfully made by using the first message. | 2011-04-21 |
20110090857 | METHOD AND DEVICE FOR ACCESSING AND OBTAINING USER EQUIPMENT CONTEXT AND USER EQUIPMENT IDENTITY - A method and device for accessing and obtaining UE context and UE identity are provided. The method for access includes: when a UE accesses an SAE network, judging, by a network node, whether a GUMMEI carried by the UE or an MMEGI in the GUMMEI is allocated or mapped by the SAE network; if the GUMMEI or MMEGI is allocated by the SAE network, selecting, by the network node, an MME according to the GUMMEI, or according to the MMEGI and an MMEC, or according to a PLMN-id, the MMEGI and the MMEC; and if the GUMMEI or MMEGI is mapped by the SAE network, selecting, by the network node, an MME according to an MCC, an MNC and an MMEC in the GUMMEI. Therefore, the access of the UE is achieved. | 2011-04-21 |
20110090858 | METHOD AND APPARATUS FOR ALLOCATING COMMUNICATION RESOURCES USING VIRTUAL CIRCUIT SWITCHING IN A WIRELESS COMMUNICATION SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN A MOBILE STATION USING THE SAME - A method and apparatus using Virtual Circuit Switching (VCS) in a new scheme are provided for allocating and employing resources by combining Circuit Switching (CS) and Packet Switching (PS), in which a base station allocates resources of a dedicated channel using the CS to a user and then transmits data on the dedicated channel. When data is not transmitted to the user, the base station allocates the allocated dedicated channel resources for resources of a shared channel and transmits data of a different user. Therefore, system capacity can be increased and a waste of communication resources can be minimized in a wireless communication system for frequently transmitting a small amount of traffic that is sensitive to a delay time. | 2011-04-21 |
20110090859 | BASE STATION, MOBILE COMMUNICATION TERMINAL EQUIPMENT, AND PRIMARY CELL DETERMINATION METHOD - A base station receives a signal transmitted from a mobile station, estimates the state of the radio uplink, and receives state information indicating the state of the radio downlink measured by the mobile station. When the uplink quality and the downlink quality satisfy scheduling grant conditions set up in advance, the base station is allowed to carry out scheduling for the mobile station. In contrast, the base station is not allowed to carry out the scheduling for any terminal in which a link imbalance has occurred. Therefore, the throughput of the whole system increases. | 2011-04-21 |
20110090860 | SYSTEM INFORMATION TRANSMISSION METHOD AND SUBFRAME STRUCTURE - Methods for transmitting system information, subframe structures, and pilot structures in a wireless access system are disclosed. A method for receiving system information in a wireless access system includes receiving a Network Common Information (NCI) channel including network common system information from a Base Station (BS), receiving a synchronization channel from the BS, for acquiring synchronization with the BS, receiving a Cell Specific Information (CSI) channel including cell specific system information which is specific to the BS from the BS, and decoding the NCI channel and the CSI channel using the synchronization channel. The NCI channel is transmitted over a first frequency channel and the CSI channel is transmitted over a second frequency channel. | 2011-04-21 |
20110090861 | METHOD AND APPARATUS FOR REUSE OF ADAPTIVE PARTIAL FREQUENCY INA CELLULAR MOBILE COMMUNICATION SYSTEM - Disclosed is an adaptive partial frequency reuse method and system in a cellular mobile communication system. The adaptive partial frequency method includes the steps of: receiving interference feedback information transmitted from at least one terminal; determining if there is a terminal located in a cell boundary, based on the received interference feedback information; when there is the terminal located in the cell boundary, dividing the frequency band into multiple frequency sub-bands, and allocating different power to the respective multiple frequency sub-bands for each of the at least one base station; and providing data service to the terminal by using the power allocated the respective frequency sub-bands. | 2011-04-21 |
20110090862 | METHOD FOR TRANSMITTING AN UPLINK CHANNEL SOUNDING REFERENCE SIGNAL - A method wherein: a base station assigns resource to an uplink channel sounding reference signal (SRS) of a UE, sends the SRS configuration parameters to the UE, wherein the SRS configuration parameters include SRS bandwidth parameter B | 2011-04-21 |
20110090863 | Method for Mapping Physical Random Access Channels - The present invention discloses a method for mapping physical random access channels, which comprises the following steps: the PRACHs in the same time domain location are mapped from low frequency to high frequency, or from high frequency to low frequency in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap; or the PRACHs in the same time domain location are mapped from two sides to the middle in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap. The present invention enables uniformly distributing the PRACHs which require to be processed by the same base station in the time domain, and decreasing the inter-cell interference of the second type PRACH to the utmost extent at the same time. | 2011-04-21 |
20110090864 | Method and apparatus for facilitating handover from a WCDMA public land mobile access network to a generic access network - Handover is improved from a 3 G WCDMA UTRAN to a generic access network (GAN) cell. For handover, mobile stations measure signal level from neighbor cells. In a WCDMA UTRAN, measurement of cells having a frequency number different from the serving cell, require the network to generate time gaps so the mobile station can perform measurements on different frequencies. GAN cells do not transmit on their allotted frequency number. This number together with an identifier is used to identify the GAN cell between the MS and RNC. A modified registration procedure permits GAN cells to always have the same frequency number as neighboring UTRAN cells, wherein the MS communicates the current UTRAN cell frequency number to the GAN controller, which adopts this number, and determines the corresponding identifier. The identifier may be the same for all GAN cells, or can be obtained from a mapping table, which maps an identifier to each frequency. | 2011-04-21 |
20110090865 | Technique for Providing Network Access To Different Entities - A technique for providing network access to an external device is described. A modem device for realizing this technique comprises a first mobile platform module adapted to support network access via a first radio access technology (RAT) and comprising a first data interface towards the external device, as well as a second mobile platform module adapted to support network access via at least one second RAT and comprising a second data interface towards the external device. | 2011-04-21 |
20110090866 | METHOD, USER EQUIPMENT AND COMMUNICATION SYSTEM FOR INTER-RAT HANDOVER IN 3G LTE - The invention provides a method for enabling inter-RAT handover in a communication system comprising a first network utilizing a first radio access technology and a second network utilizing a second radio access technology. When a user equipment moves from the first network into the second network and a handover is to be made, processing protocol data units (PDUs) in non-IP packet format and buffered in the first network or in the user equipment into IP packets in response to a handover confirmation (HOcfm) sent by the second network; forwarding the processed IP packets from the first network to the second network if the PDUs are buffered in the first network; and retransmitting the processed IP packets after the user equipment is switched to the second network. An user equipment and a communication system corresponding with the method of the invention are also provided. | 2011-04-21 |
20110090867 | Communication Terminal, Communication System, Handover Process Method, and Program - It is possible to provide a communication terminal, a handover process method, a communication system, and a program which can reduce a transmission delay accompanying a handover process in a mobile communication and perform a high-speed high-quality data communication. A mobile telephone ( | 2011-04-21 |
20110090868 | METHOD AND APPARATUS FOR REGISTRATION, COMMUNICATION AND HANDOVER OF MOBILE NODE - The present invention relates to mobile communication technologies, and discloses a method and an apparatus for registration, communication, and handover of a Mobile Node (MN). The present invention is intended to overcome the bottlenecks of data traffic and processing capability in the home network in the prior art. A distributed mobility management system is provided herein. The system includes at least two Mobility Management Anchors (MMAs): any two MMAs are interconnected; at least one terminal exists in each MMA connection; each MMA stores a terminal binding relationship table; and the terminal binding relationship table records identifiers (IDs) and Internet Protocol (IP) addresses of terminals. The distributed mobility management system under the present invention can balance load, improve the data processing capability, simplify the signaling interaction in various procedures, and improve the system processing capability. | 2011-04-21 |
20110090869 | METHOD AND SYSTEM SUPPORTING HANDOVER FROM MACRO NODE B TO HOME NODE B - A method for supporting handover from macro Node B to home Node B is proposed according present invention, comprising: informing, by a source radio network control node of a UE1 the UE of configuration parameters of a cell to be measured and indicating the UE to report a unique ID of the measured cell; measuring, by the UE, a signal from the home Node B, and after reading the home Node B's unique ID from the home Node B's system information, reporting the measurement result to said source radio network control node of the UE, said measurement result including the home Node B's unique ID; and sending, by said source radio network control node, a message to a destination radio network control node of said home Node B specified by said unique ID, so that the destination radio network control node can establish radio bearer in the home Node B for the UE. | 2011-04-21 |
20110090870 | ENHANCED SAE MOBILITY - The present invention relates to a solution for handling seamless handover between a 3GPP network and a non-3GPP network or two non-3GPP networks. The solution uses a new state information informing about a UE being in an Idle state in relation to the network not currently communicating through. Thus the UE is not immediately detached from the old network but may keep a logical connection and quickly re-attach to the old network if of interest. | 2011-04-21 |
20110090871 | METHOD AND APPARATUS FOR COMPENSATING QOS DURING HANDOVER BY BASE STATION IN WIRELESS BROADBAND ACCESS SYSTEM - An apparatus and method for compensating Quality of Service (QoS) during a handover of a Mobile Station (MS) by a serving Base Station (BS) and a target BS in a wireless broadband access system are provided. The method includes generating a message during a handover from the serving BS to a target BS, the message including at least one of a data transmission/reception time just before the handover, a size of a time window for which a data transmission/reception history is recorded in an accumulated way, and an amount of data transmitted/received during the time window, and transmitting the message to the target BS. The target BS can more accurately find a handover break time and the amount of data transmission/reception in the serving BS at the time the MS has been handed over to the target BS, enabling fast and adequate QoS compensation/correction for each QoS class, and thus facilitating flexible, efficient and accurate QoS provisioning regardless of controlled handover and uncontrolled handover. | 2011-04-21 |
20110090872 | METHOD FOR PERFORMING A HANDOVER IN A MOBILE COMMUNICATION SYSTEM - A method where a first type location area of a mobile node is registered to a first mobility management node. A second type location area is determined based on a location of the mobile node. A second type location area of the mobile node is registered to a second mobility management node of a second system. A request to perform user plane bearer establishment through the second system is received. Thereupon, radio measurements associated with at least two candidate cells are obtained from the mobile node. Candidate cells are searched to find at least one cell associated with the second type location area. A cell is selected among the at least one cell, which is indicated to the selected cell to the mobile node. A handover request is provided to the mobile node. | 2011-04-21 |
20110090873 | METHOD AND SYSTEM FOR MANAGING HANDOVER IN RADIO ACCESS NETWORKS - A method and system for managing handover from a first radio access network to second radio access network is provided. The method includes receiving information associated with one or more neighboring cells from a User Equipment (UE). The information associated with the one or more neighboring cell is measurement reports. Thereafter, the method deciding to perform Handover (HO) based on the measurement reports for the UE from the first radio access network to the second radio access network. Further, the method identifies a target cell from the one or more neighboring cells. The method then determines target cell capabilities. Thereby, the method sends at least one of a handover required message and a relocation required message along with the target cell capabilities to a core network element. The core network element then manages voice bearers and non-voice bearers based on the target cell capabilities. | 2011-04-21 |
20110090874 | SIMULTANEOUS USE OF MULTIPLE PHONE NUMBERS IN MOBILE DEVICE BY SHARING HARDWARE - Determining and simultaneously using a circuit for a mobile device couple to a base station, the circuit may comprise an identification signal detector for receiving a first identification signal corresponding to a first module and a second identification signal corresponding to a second module in the mobile device. The circuit may comprise a receiver for receiving a plurality of signals from the base station; said plurality of signals is configured to set up communication between the mobile device and the base station. The circuit may comprise a calculator for calculating a plurality of parameters in response to the first identification signal, second identification signal and said plurality of signals received from said base station. The circuit may also comprise a processor for attaching the first and second module to the base station simultaneously in response to a plurality of slots by time multiplexing and the plurality of parameters, | 2011-04-21 |
20110090875 | APPARATUS AND METHODS FOR DETERMINATION OF GAIN FACTORS FOR WIRELESS COMMUNICATION TRANSMISSION POWER - Apparatus and methods for wireless communication transmission power control are provided. Determination of gain factors and adjustments for physical channel reconfiguration in the context of transmission power control are addressed. Preferably, implementation is in conjunction with communication systems in which wireless communications are conducted between wireless transmit receive units (WTRUs) using multiple channels that are concurrently transmitted. | 2011-04-21 |
20110090876 | REDUCED TRANMISSION TIME INTERVAL - A method is suggested for communicating to a mobile station which timeslots are configured as packet data channel pairs and on which of these packet data channel pairs the mobile station is assigned resources, wherein a description of packet data channel pairs is separated into “configuration” and an “assignment”. | 2011-04-21 |
20110090877 | METHOD AND OPERATION FOR OPERATION BETWEEN WPAN AND WLAN FOR A NETWORK INTERFACE CARD - A wireless network adapter may provide an absence indicator to devices in a first network to alert such devices to a time period when the wireless network adapter is not available in the first network. The wireless network adapter may operate in multiple networks, wherein the multiple networks are time division multiplexed on a same transmission channel. The absence indicator may be provided as a Notice Of Absence (NOA) Information Element (IE). | 2011-04-21 |
20110090878 | Wireless Device With Opportunistic Band Access - A wireless communication network system includes a plurality of nodes. Each node from the plurality of nodes includes a plurality of communication modules. Each module includes a modem and is configured to operate according to a communication protocol. Each communication module is configured to monitor its own communication parameter data and to cooperate with companion modules of a node by sharing communication parameter data, for instance through a coordination unit. Each communication module is further configured to allow, preferably according to a predefined set of rules, communication using a protocol of one communication module by utilizing a band associated with a companion module. The sharing of communication parameter data between modules may be continuous sharing or periodic sharing. | 2011-04-21 |
20110090879 | Method and Apparatus of Providing a Frame Structure for Supporting Different Operational Modes - An approach provides a frame structure for supporting different operational modes. A frame is generated for transmission over a network to a first device and a second device over a first bandwidth and a second bandwidth, respectively. The preamble provides synchronization for operation over the first bandwidth and the second bandwidth. | 2011-04-21 |
20110090880 | WIRELESS COMMUNICATION UTILIZING MIXED PROTOCOLS - Certain aspects of the present disclosure provide techniques for wireless communications using two different physical layers with a common medium access control layer. | 2011-04-21 |
20110090881 | GATEWAY DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A gateway apparatus | 2011-04-21 |
20110090882 | METHOD AND APPARATUS FOR TRANSMITTING RECORDING INFORMATION FOR UPLINK TRANSMISSION IN MULTI BASE STATION MIMO SYSTEM - A PMI combination ratio (PCR) being used for generating a uplink precoding matrix W is transmitted by a base station to a mobile station. Using the PCR, a PMI maximizing transmission performance and PMI | 2011-04-21 |
20110090883 | INFORMATION TERMINAL AND COMPUTER PROGRAM - An information terminal includes: a wireless communication section configured to communicate with an outside; a main functional section configured to perform an information processing operation that includes data communication with the outside, performed using the wireless communication section; a monitoring section configured to detect a state of power supply for the main functional section; and a communication control section configured to cause the wireless communication section to transmit data, preliminarily stored in a memory, to the outside when the state detected by the monitoring section corresponds to a state in which the main functional section is not capable of performing data communication using the wireless communication section. | 2011-04-21 |
20110090884 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING SYSTEM INFORMATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for transmission/reception of system information in a broadband wireless communication system are provided. An operation of a Base Station (BS) in a broadband wireless communication system includes determining whether to apply a system configuration corresponding to a previous value of a Secondary-Super Frame Header (S-SFH) change count changed according to update of system information and, when applying the system configuration corresponding to the previous value of the S-SFH change count, setting a parameter representing the applied system configuration to a first value and, when applying a system configuration corresponding to a current value of the S-SFH change count, setting the parameter to a second value, and transmitting a Primary-Super Frame Header (P-SFH) including the S-SFH change count and the parameter set to the first value or the second value. | 2011-04-21 |
20110090885 | METHODS AND APPARATUS FOR CENTRALIZED AND COORDINATED INTERFERENCE MITIGATION IN A WLAN NETWORK - Method and apparatus for interference mitigation in wireless local area networks (such as WLANs). In one embodiment, a centralized interference measurement and mitigation method is disclosed. The method may involve spectral sensing, beamforming, MIMO, power control, MAC scheduling using a cross-layer approach, and/or broadcast channel precoding, employed towards performance enhancement of WLAN networks in presence of interference. In one variant, different actions at interference mitigation are selected based on the source of the interference (e.g., inter-network or intra-network). | 2011-04-21 |
20110090886 | APPARATUS AND METHOD FOR ESTABLISHING A PERSONAL NETWORK FOR PROVIDING A CPNS SERVICE - Provided is an apparatus and a method for establishing a Personal Network (PN) by interconnecting a gateway device and various Consumer Electronics (CE) devices through a simple process in order to enable the CEs to receive various services. The method includes performing a physical pairing with surrounding devices by using Near Field Communication (NFC); finding a gateway device, which relays a service from the server, from among the paired devices; selecting a scheme for establishing a PN with the gateway device; and sending a request for connection with a PN according to the selected scheme to the found gateway device. | 2011-04-21 |
20110090887 | Method and Apparatus for Scanning Existing Networks in TVWS - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 2011-04-21 |
20110090888 | Wirelessly Communicating Sensor Data to the Internet - A method of wirelessly communicating sensor data includes providing a wireless sensor module that includes a sensor and a transmitting circuit. The transmitting circuit is connected for wirelessly transmitting data derived from the sensor for receipt by a receiver connected to the internet for providing information derived from said sensor on the internet. The method also includes using said sensor and wirelessly transmitting data derived from the sensor. | 2011-04-21 |
20110090889 | COMMUNICATION SYSTEM - A mobile station transmits a physical address given to the mobile station to a connection device via a base station when subscribing to a communication system. The connection device previously stores the physical address given to the mobile station and an IP address in a table of the connection device in association with each other, searches the table for the IP address corresponding to the physical address transmitted from the mobile station from the address storage section, generates a header compression rule in accordance with the IP address searched for, and transmits the generated header compression rule to the mobile station via the base station. | 2011-04-21 |
20110090890 | METHOD OF CHANNEL SCANNING IN WIRELESS LOCAL AREA NETWORK SYSTEM - A method and apparatus of scanning channels of a white space zone in a wireless local area network is provided. A response frame includes a white space map including information about whether each white space channel in the white space zone is occupied by an incumbent user. Channels of the white space zone are scanned based on the white space map. | 2011-04-21 |
20110090891 | MICROWAVE RADIO COMMUNICATIONS DEVICE AND RELATED METHOD OF OPERATION AND NETWORK ARRANGEMENT - A microwave radio communications device is configured to communicate with a selected one of at least first and second base stations of respective first and second cells, the first cell having a greater area of coverage than the second cell. The device is configured to retrieve data from a BSID sent from each base station and serving to discriminate between signals from the said first and second base stations indicating the relative cell coverage. Thereby the device achieves selective registration to one of the base stations responsive to the said discrimination. | 2011-04-21 |
20110090892 | BONDED INTERCONNECTION OF LOCAL NETWORKS - Apparatus and methods relating to bonded interconnection of local communication networks are disclosed. Bonded communication links, including multiple constituent links that have been bonded together, are terminated to enable communications over the bonded links using bandwidth available on the constituent links. A cross-connect function determines whether received communication traffic is to be forwarded to one or more of a local communication network and the terminated bonded links. The received communication traffic is forwarded in accordance with the determination. The local communication networks may include ring networks, linear networks, or both. The bonded links and links between nodes in a local communication network are bonded DSL (Digital Subscriber Line) links in some embodiments. Bonding of DSL links in this manner can be used, for instance, to extend the reach of DSL service without sacrificing bandwidth. | 2011-04-21 |
20110090893 | MOBILE COMMUNICATION SYSTEM, RECEIVER AND METHOD - A transmitter in a mobile communication system code-multiplexes transmission symbols together with spreading codes, performs inverse Fourier transform and transmits the result from multiple transmit antennas. A receiver in the mobile communication system performs Fourier transform on signals received at multiple receive antennas, extracts signal components of individual subcarriers and estimates symbols in accordance with a QR decomposition algorithm. A unitary matrix is derived such that a product of a spreading matrix including spreading elements as its elements and a channel matrix representing radio channel states is equal to a product of the unitary matrix and a triangular matrix. A reception vector, a unitary matrix and a triangular matrix are used to estimate symbol candidates transmitted from individual transmit antennas. | 2011-04-21 |
20110090894 | MIDAMBLE ALLOCATIONS FOR MIMO TRANSMISSIONS - Allocation of multiple training sequences transmitted in a MIMO timeslot from multiple transmit antenna elements is provided. For example, a method of generating signals in a MIMO timeslot, the method comprising: selecting a first training sequence; preparing a first data payload; generating a first signal including the prepared first data payload and the first training sequence; transmitting the first signal in a MIMO timeslot from a first antenna of a network element; selecting a second training sequence, wherein the second training sequence is different from first training sequence; preparing a second data payload; generating a second signal including the prepared second data payload and the second training sequence; and transmitting the second signal in the MIMO timeslot from a second antenna of the network element. | 2011-04-21 |
20110090895 | METHOD FOR TRANSMITTING SYSTEM INFORMATION - The present invention provides a method for transmitting system information, wherein the SIs are transmitted in their respective windows, and the windows do not overlap with each other, when the windows is equal to 1 millisecond, system information blocks are mapped into SIs and the number of the SIs is smaller than or equal to 5. Through this method, the initial wireless sub-frame of the transmitting window of the system information is configured to have offsets, so that the transmitting conflict between SI and SIB1 can be avoided. | 2011-04-21 |
20110090896 | METHODS FOR SYNCHRONIZING DATA IN A NETWORK - A wireless network may contain access points that run a network management service. The service may monitor the access points and associated wireless access control settings. Wireless access control settings may be changed by a user to add or remote authorized client devices. The network management service may automatically detect changes to the network and may synchronize settings between access points accordingly. Each access point may broadcast a service name. The service name may include a wireless access point participant identifier, a cloud identifier that is based on a service set identifier, and a commit identifier that is based on a hash of the wireless access control settings for the broadcasting wireless access point. Cloud identifiers can be compared to identify whether a new access point should be synchronized. Participant identifiers may be compared to identify leaders. Commit identifiers can be compared to detect changes in wireless settings. | 2011-04-21 |
20110090897 | Systems and methods for transmitting media content via digital radio broadcast transmission for synchronized rendering by a receiver - Systems, methods, and processor readable media are disclosed for encoding and transmitting first media content, second media content and triggering instructions to a digital radio broadcast receiver such that the triggering instructions arrive for immediate execution to trigger immediate rendering of the second media content in synchronization with the first media content. | 2011-04-21 |
20110090898 | Methods and Apparatus for Enabling Media Functionality in a Content-Based Network - Methods and apparatus for providing unified access to interactive media applications and services in a network. In one embodiment, the network comprises a content-based network such as a cable television or satellite network, and the applications are disposed at the network headend. A servlet is provided to facilitate communication between the applications and client devices. The servlet acts as a proxy for applications utilizing a different content format than the client devices. The applications obtain data from e.g., an internet host server via a gateway device. The client application(s) may comprise Enhanced TV Binary Interchange Format (EBIF) pages, and are configured so as to permit use via a common interface (e.g., the user's set top box and television display). These client applications enable a user to, for example, search the internet for data relating to displayed content, post and navigate micro-blogs, instant messaging or SMS, making telephone calls (e.g., VoIP), address/contact management, or provide the user with additional information about a product or service. An application providing internet content to the client device is also provided. | 2011-04-21 |
20110090899 | Multimedia Routing System for Securing Third Party Participation in Call Consultation or Call Transfer of a Call in Progress - A multimedia router has code executable on the router from storage on a machine readable medium coupled to the router, the code providing routing functions, and a routing point identified in the router code for establishing at least one non-voice communications session between two or more communications appliances enabled for non-voice communications. During a voice call established between a calling party and one of the two or more communications appliances, the routing point is invoked from the called communications appliance by issuance of a non-voice routing request to establish at least one non-voice communications session between the called communications appliance and another of the two or more communications appliances. | 2011-04-21 |
20110090900 | Controlling registration floods in VoIP networks via DNS - A mechanism controls global synchronization, or registration floods, that may result when a large number of endpoints in a Voice over Internet Protocol (VoIP) network such as an Internet Protocol Multimedia Subsystem (IMS) come online simultaneously after a catastrophic failure. The mechanism allows the Domain Name System (DNS) infrastructure to efficiently control the overload condition by registering user end points with backup border elements, and by staggering and by randomizing the time-to-live (TTL) parameter in registrations with backup border elements. | 2011-04-21 |
20110090901 | DETERMINATION OF PERSONA INFORMATION AVAILABILITY AND DELIVERY ON PEER-TO-PEER NETWORKS - A method of operating a communication system to establish communication sessions between an origination network and a peer-to-peer network comprises receiving session signaling to establish a session between an origination device in the origination network and a destination node in the peer-to-peer network, wherein the session signaling includes a participant identifier associated with the origination device. The method further comprises processing the participant identifier to determine if persona information that identifies an originating participant and an entity associated with the originating participant is available for display by a destination device registered as the destination node on the peer-to-peer network and, if the persona information is available, transferring the persona information for delivery to and display by the destination device to a destination participant. The method further comprises establishing the session over the origination network and the peer-to-peer network and exchanging user communications for the session between the origination device and the destination device. | 2011-04-21 |
20110090902 | System and method for providing quality of service considering priorities of terminals in a communication system - Quality of Service (QoS) is provided based on a priority of a terminal in a communication system. A communication server receives Session Description Protocol (SDP) information and priority information of each of first and second terminals, and transmits, to a Policy Decision Function block (PDF), the SDP information of each of first and second terminals and priority information corresponding to a highest priority in the priority information of the first and second terminals. The PDF performs authentication based on QoS profile information of the first and second terminals acquired from a service profile server upon request for SDP information of each of the terminals, generates a QoS decision value based on the authentication results, and reserves resources that the first terminal will use to perform a communication service with the second terminal, using the QoS decision value. The PDF upgrades the QoS decision value based on the highest-priority information. | 2011-04-21 |
20110090903 | PROVIDING LOCATION INFORMATION IN AN IP MULTIMEDIA SUBSYSTEM NETWORK - A method and apparatus for providing location information to a CSCF in an IMS network. An S-CSCF registers a first contact associated with an IMPU, and receives location information associated with the first contact. A second contact associated with the same IMPU, and also with a mobile access, is then registered at the S-CSCF. The S-CSCF receives location information associated with the second contact. | 2011-04-21 |
20110090904 | METHOD AND NETWORK ELEMENT FOR IMPLEMENTING A CUSTOMIZED VIDEO SERVICE IN IMS NETWORKS - The present invention proposes a method for implementing a customized video service in IMS networks and a network element for controlling sessions between terminals, wherein a first terminal is calling a second terminal under the control of a first network element, and the second terminal has subscribed a customized video service provided by a second network element. The method comprises: the first network element transmits to the second network element a message of requesting for playing video to the first terminal which includes media information about the first terminal, after having known that the second terminal has the customized video service; the second network element transmits to the first network element an acknowledgement with information on the video to be played, if it determines that the first terminal supports the format of video to be played based on the media information about the first terminal; the first network element transmits to the second network element a message with information on the customized video service, and transmits to the first terminal a reply with the media information of video to be played after having received from the second network element a response with the media information of video to be played; and a media path is established between the first terminal and the second network element, thereby the video customized by the second terminal being played to the first terminal, and the call request sent by the first terminal while calling the second terminal is forwarded to the second terminal by the first network element. | 2011-04-21 |
20110090905 | Switching Matrix and Method For Specifying a Switching Matrix - A method is proposed to specify a switching matrix (SM) for connecting selected ingress ports to selected egress ports of the a Benes network with a plurality of interconnected switching elements (SE) arranged in stages (S | 2011-04-21 |
20110090906 | PACKET REDIRECTION IN A COMMUNICATION NETWORK - A method of controlling the re-direction of IP packets to an IP host having two or more different IP addresses comprises generating a first of said IP addresses as a one-way function of the second IP address. The method further comprises accepting a request to re-direct a packet destined to said first IP address to another IP address only if the other IP address is the second IP address. | 2011-04-21 |
20110090907 | SERVICE SEGREGATION ACCORDING TO SUBSCRIBER SERVICE ASSOCIATION - Processing a plurality of packets through at least one service, a privilege granter monitors at least two authentication packets to obtain a source unique network identifier, one of which does not have a vendor specific attribute and detects an authentication packet among the at least two authentication packets, and the authentication packet having the vendor specific attribute. The privilege granter receives at least one response authentication packet having at least one service definition identifier, the service definition identifier corresponding to the source unique network identifier, responsive to detecting the authentication packet having the vendor specific attribute and builds an entitlement database to pair the source unique network identifier to the service definition identifier. The privilege granter receives a session packet and determines that the source unique network identifier corresponds to a user entitlement in the entitlement database. The privilege granter routes the session packet to an addressable service. | 2011-04-21 |
20110090908 | ADAPTIVE MULTI-INTERFACE USE FOR CONTENT NETWORKING - One embodiment provides a system that forwards a packet with a hierarchically structured variable-length identifier (HSVLI) in a network. An HSVLI indicates a piece of content and indicates a hierarchical structure of contiguous components ordered from a most general level to a most specific level. The length of the HSVLI is not fixed. During operation, the system receives a packet which contains an interest for a piece of content with an HSVLI. Subsequently, the system determines forwarding information for the HSVLI based on one or more of: knowledge of content which matches the HSVLI, a forwarding policy, and contextual information about the network. Next, the system configures a forwarding engine with the forwarding information. The system then forwards the packet based on the forwarding information. | 2011-04-21 |
20110090909 | MULTIFUNCTIONAL CONTROL CHANNEL FOR PSEUDOWIRE EMULATION - A system advertises a multifunctional control channel (MFCC) in an interface parameter sub-type-length-value (TLV) of an advertisement label mapping message that is dispatched to a network device. The system also processes a reply label mapping message that is transmitted from the network device in response to the advertisement label mapping message and updates a label information base to establish a pseudowire and a MFCC associated with the pseudowire. | 2011-04-21 |
20110090910 | ENHANCED VIRTUAL SWITCH - A system and method for providing network connectivity to a host, involving creating a virtual switch on the host, specifying at least one data link attribute of the virtual switch, creating a plurality of virtual network interface cards (VNICs) on the host, associating each of the plurality of VNICs with the virtual switch, and assigning the at least one data link attribute of the virtual switch to each of the plurality of VNICs, where the virtual switch is connected to a physical network interface card (NIC) associated with the host, where each of the plurality of VNICs is associated with a different one of a plurality of execution environments, where the plurality of execution environments is located on the host, and where the plurality of VNICs is located on the host. | 2011-04-21 |
20110090911 | METHOD AND APPARATUS FOR TRANSPARENT CLOUD COMPUTING WITH A VIRTUALIZED NETWORK INFRASTRUCTURE - A capability is provided for providing transparent cloud computing with a virtualized network infrastructure. A method for enabling use of a resource of a data center as an extension of a customer network includes receiving, at a forwarding element (FE), a packet intended for a virtual machine hosted at an edge domain of the data center, determining a VLAN ID of the VLAN for the customer network in the edge domain, updating the packet to include the VLAN ID of the VLAN for the customer network in the edge domain, and propagating the updated packet from the FE toward virtual machine. The edge domain supports a plurality of VLANs for a respective plurality of customer networks. The packet includes an identifier of the customer network and a MAC address of the virtual machine. The VLAN ID of the VLAN for the customer network in the edge domain is determined using the identifier of the customer network and the MAC address of the virtual machine. The FE may be associated with the edge domain at which the virtual machine is hosted, an edge domain of the data center that is different than the edge domain at which the virtual machine is hosted, or the customer network. Depending on the location of the FE at which the packet is received, additional processing may be provided as needed. | 2011-04-21 |
20110090912 | Steering Data Communications Packets Among Service Applications With Server Selection Modulus Values - Steering data communications packets for transparent, bump-in-the-wire data processing among multiple service applications; the service applications executing on servers organized in groups, each server in a server group executing an instance of a same service application, including selecting an instance of each of the service applications to process a packet; identifying a server selection value for each packet as a single integer value that yields server selection modulus values that identify each instance of each of the service applications to process the packet; and steering, by the switches in dependence upon the server selection modulus values, each packet to each instance of each of the service applications to process the packet. | 2011-04-21 |
20110090913 | APPARATUS AND METHOD OF CONTROLLING LSP OF RSVP-TE PROTOCOL USING LABEL WITH AVAILABILITY OF END-TO-END RANGE - Provided are a method and apparatus of controlling a Label Switched Path (LSP) of a Resource Reservation Protocol-Traffic Engineering (RSVP-TE) protocol, which may define an available label in an End-to-End range when a label is not changed by transit nodes, and is determined only by an external management system or a manager, or an ingress node or an egress node, thereby more simply and effectively operating the RSVP-TE protocol, and removing limitations in functions of nodes such as path calculating. | 2011-04-21 |
20110090914 | METHOD AND SYSTEM FOR MANAGING AN ENERGY EFFICIENT NETWORK UTILIZING AUDIO VIDEO BRIDGING - Aspects of a method and system for managing an energy efficient network utilizing Audio Video Bridging are provided. Communications on an Ethernet link may be scheduled into a plurality of recurring time slots, where the scheduling comprises reserving resources of the Ethernet link utilizing the Audio Video Bridging suite of protocols. One or more occurrences of one or more of the recurring time slots may be designated for carrying out an energy efficient networking transaction on the link. The energy efficient networking transaction may be carried out during the designated one or more occurrences of the one or more of the recurring time slots. The energy efficient networking transaction may comprise communicating information for scheduling a change in the data rate on the network link. The energy efficient network transaction may comprise communicating information for implementing the change in the data rate. | 2011-04-21 |
20110090915 | METHOD AND SYSTEM FOR INTRA-HOST COMMUNICATION - A system including first and second virtualized execution environments and a hypervisor for sending packets between virtualized execution environments. The first virtualized execution environment includes a first VNIC associated with a first hardware address (HA), a first proxy VNIC associated with a second HA, and a virtual switch. A Vswitch table for the virtual switch includes entries associating the first HA with the first VNIC and the second HA with the first proxy VNIC. The second virtualized execution environment includes a second proxy VNIC associated with the first HA. The virtual switch receives a first packet associated with the second HA. The virtual switch sends the first packet to the first proxy VNIC when Vswitch table entry associates the second HA with the first proxy VNIC. The first VNIC proxy sends the first packet from the first virtualized execution environment to the second virtualized execution environment using the hypervisor. | 2011-04-21 |
20110090916 | LABEL AND EXP FIELD BASED MPLS NETWORK DEVICE - A network device receives a label-switched-path (LSP) labeled data packet, maps the LSP labeled data packet to an input queue, maps a data packet in the input queue to an output queue based on a received LSP label value and a received exp label value, and transmits the LSP labeled data packet from the output queue. | 2011-04-21 |
20110090917 | Multicast Broadcast Single Frequency Network Data Scheduling and Handling - A system is provided for scheduling for a multicast broadcast single frequency network (MBSFN). The system includes a central control configured to promote a plurality of enhanced node Bs (ENBs) transmitting one or more multicast traffic channels (MTCHs). The one or more MTCHs are provided during a variable scheduling period (SP) and include a data portion that contains MBSFN traffic content and a variable scheduling portion that contains scheduling information related to the MBSFN traffic content. | 2011-04-21 |
20110090918 | COMMUNICATION METHOD AND APPARATUS - The parent station or a child station that transmits a pilot symbol is assigned to a pilot symbol transmission slot within a TDMA frame in a parent station or plurality of child stations for communicating using TDMA. The assigned parent station or child station transmits a pilot symbol using the pilot symbol transmission slot. | 2011-04-21 |
20110090919 | ACCESS DEVICE AND METHOD FOR INITIATING V5.2 INTERFACE CONNECTION THEREOF - A method of initiating a V5.2 interface connection between an access device and a local exchange includes initiating the V5.2 interface connection, initiating a first timer, determining whether a variant and interface identifier (VID) message has been received within a first time period, and stopping the first timer when the VID message is received. The method further includes initiating a second timer, sending an unblock-all-ports (UBA) message to the local exchange, determining whether a feedback message of the UBA message is received from the local exchange, reinitiating the V5.2 interface connection if the feedback message of the UBA message is received, signifying that the V5.2 interface connection is initiated. | 2011-04-21 |
20110090920 | PACKET COALESCING - In general, in one aspect, the disclosures describes a method that includes receiving multiple ingress Internet Protocol packets, each of the multiple ingress Internet Protocol packets having an Internet Protocol header and a Transmission Control Protocol segment having a Transmission Control Protocol header and a Transmission Control Protocol payload, where the multiple packets belonging to a same Transmission Control Protocol/Internet Protocol flow. The method also includes preparing an Internet Protocol packet having a single Internet Protocol header and a single Transmission Control Protocol segment having a single Transmission Control Protocol header and a single payload formed by a combination of the Transmission Control Protocol segment payloads of the multiple Internet Protocol packets. The method further includes generating a signal that causes receive processing of the Internet Protocol packet. | 2011-04-21 |
20110090921 | NETWORK ABSTRACTION LAYER (NAL)-AWARE MULTIPLEXER - A multiplexer applies dynamic bit rate reduction at the multiplexer level in accordance with the types of video input streams as determined from information contained in units of the video input streams. The multiplexer parses the Network Abstraction Layer (NAL) headers of said units to determine their relative importance and passes them on to its output accordingly. The multiplexer can also take advantage of the relation between streams if they are related, as in the case of Scalable Video Coding (SVC). | 2011-04-21 |
20110090922 | METHOD, APPARATUS, AND SYSTEM FOR ADJUSTING MULTIMEDIA ENCODING RATE - A method, an apparatus, and a system for adjusting a multimedia encoding rate are disclosed. The method includes: obtaining an expected multimedia encoding rate by using the available network bandwidth corresponding to the transmission path of a multimedia service, the expected QoE of the multimedia service, and the current multimedia encoding rate as input parameters and according to a preset multimedia resource policy decision, where the expected multimedia encoding rate is used as a reference for adjusting the current multimedia encoding rate. With the present disclosure, under the current network performance, an optimal point for balancing the effects of the media encoding rate and the network performance on the QoE is found by adjusting the multimedia encoding rate, thus achieving optimal QoE. In this way, the adjustment process is simple and fast and the success rate is high, thus improving the QoE. | 2011-04-21 |
20110090923 | METHODS AND DEVICES FOR GENERATING A REORGANIZED TRANSPORT DATASTREAM - Methods and devices are disclosed for generating a reorganized transport datastream from transport data packets of an original transport datastream displaces the first transport data packets contained in an original transport datastream into determined new positions within the reorganized transport datastream. The new positions are determined dependent upon a first data rate at which the first transport data packets of the reorganized transport datastream are stored in second buffers and a second data rate at which the first transport data packets of the reorganized transport datastream are read out from the second buffers. | 2011-04-21 |
20110090924 | SYSTEM TO CONNECT A SERIAL SCSI ARRAY CONTROLLER TO A STORAGE AREA NETWORK - An apparatus comprising a first circuit, a second circuit and an expansion circuit. The first circuit may be configured to present and receive one or more first data packets in a first format compatible with a first protocol. The second circuit may be configured to present and receive one or more second data packets in a second format compatible with a second protocol. The expansion circuit may be configured to convert the first data packets from the first format to the second format. | 2011-04-21 |
20110090925 | METHOD FOR SYNCHRONIZATION IN NETWORKS - The invention relates to a method for synchronization in networks, whereby the local time (h | 2011-04-21 |
20110090926 | LASER DEVICE - Provided is a long wavelength laser of which the operating point is stabilized and the laser oscillation is stabilized. The long wavelength laser comprises a resistor element provided to a portion where the surface current is maximum in a surface plasmon waveguide to stabilize a potential difference between a first cladding and a second cladding in the surface plasmon waveguide. | 2011-04-21 |
20110090927 | MOUNTED SEMICONDUCTOR DEVICE AND A METHOD FOR MAKING THE SAME - A method for mounting a semiconductor device onto a composite substrate, including a submount and a heat sink, is described. According to one aspect of the invention, the materials for the submount and the heat sink are chosen so that the value of coefficient of thermal expansion of the semiconductor device is in between the values of coefficients of thermal expansion of the materials of the submount and the heat sink, the thickness of the submount being chosen so as to equalize thermal expansion of the semiconductor device to that of the surface of the submount the device is mounted on. According to another aspect of the invention, the semiconductor device, the submount, and the heat sink are soldered into a stack at a single step of heating, which facilitates reduction of residual post-soldering stresses. | 2011-04-21 |
20110090928 | LASER DIODE - A laser diode includes an n-type semiconductor region, a p-type semiconductor region, a semiconductor mesa provided between the n-type semiconductor region and the p-type semiconductor region, the semiconductor mesa including an active layer, and a semiconductor burying region located between the n-type semiconductor region and the p-type semiconductor region, the semiconductor burying region being provided on a side face of the semiconductor mesa. The semiconductor burying region includes an n-type semiconductor burying layer and a p-type semiconductor burying layer. The n-type semiconductor burying layer is provided between the p-type semiconductor region and the p-type semiconductor burying layer. The p-type semiconductor burying layer is doped with an element that forms an electron trapping level in the band gap of the p-type semiconductor burying layer. | 2011-04-21 |
20110090929 | SURFACE EMITTING LASER AND MANUFACTURING METHOD THEREFOR - Provided is a surface emitting laser or the like capable of suppressing horizontal misalignment between the surface relief structure and the current confining structure to make higher the precision of the alignment, to thereby obtain single transverse mode characteristics with stability. The surface emitting laser having a semiconductor layer laminated therein includes: a first etching region formed by etching a part of the upper mirror; and a second etching region formed by performing etching from a bottom portion of the first etching region to a semiconductor layer for forming a current confining structure, in which a depth of the second etching region is smaller than a depth of the first etching region. | 2011-04-21 |
20110090930 | VERTICAL CAVITY SURFACE EMITTING LASER WITH UNDOPED TOP MIRROR - A VCSEL with undoped top mirror. The VCSEL is formed from an epitaxial structure deposited on a substrate. A doped bottom mirror is formed on the substrate. An active layer that includes quantum wells is formed on the bottom mirror. A periodically doped conduction layer is formed on the active layer. The periodically doped conduction layer is heavily doped at locations where the optical energy is at a minimum when the VCSEL is in operation. A current aperture is used between the conduction layer and the active region. An undoped top mirror is formed on the heavily doped conduction layer. | 2011-04-21 |
20110090931 | SEMICONDUCTOR DIFFRACTION GRATING DEVICE AND SEMICONDUCTOR LASER - A semiconductor diffraction grating device includes a semiconductor substrate having a principal surface, a semiconductor core layer and a semiconductor cladding layer provided on the principal surface, and a chirped grating structure provided between the semiconductor core layer and the semiconductor cladding layer. The chirped grating structure includes a first region, a second region, and a third region arranged in that order in a predetermined axis direction, the first, second, and third regions including a plurality of projections constituting a chirped grating. The plurality of projections are provided at placement positions arranged with a predetermined pitch in the predetermined axis direction. The coupling coefficient κ of the chirped grating monotonically increases in the predetermined axis direction to a predetermined value in the first region, remains flat in the second region, and monotonically decreases in the predetermined axis direction from the predetermined value in the third region. | 2011-04-21 |
20110090932 | MULTIPLE DISTRIBUTED FEEDBACK LASER DEVICES - Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating. | 2011-04-21 |
20110090933 | Electric Glass Hot Shop System - An electric glass hot shop system is described herein that has at least one electrically powered heating unit (e.g., electric furnace, electric glory hole, electric pipe warmer, electric color box, electric annealer, electric crucible kiln) used in the processing of glass. | 2011-04-21 |
20110090934 | SEALING DEVICE - A sealing device is arranged around a rod electrode extending vertically through an aperture made in the ceiling of an arc furnace and being vertically movable inside the furnace to prevent the access of gases from the furnace through the aperture to the atmosphere, and on the other hand to prevent air from flowing from the atmosphere into the furnace. The sealing device comprises a gas distribution chamber provided with an inlet channel for feeding essentially passive gas, such as nitrogen or air, into the gas distribution chamber. The sealing device also includes a slit nozzle encasing the electrode, through which nozzle a gas jet is arranged to be discharged from the gas distribution chamber towards the electrode in a direction that is at an angle with respect to the horizontal plane and has a slightly upwards inclined orientation, and that is, with respect to the furnace interior, pointed outwardly, so that the sealing is carried out owing to the effect of the created stagnation pressure. | 2011-04-21 |
20110090935 | METHOD FOR PERFORMING ULTRASONIC TESTING - A method for performing ultrasonic testing comprising, in one embodiment, the steps of firing an ultrasonic transducer to generate an ultrasonic pulse that passes through a delay line, measuring a delay echo time of flight, and determining the temperature of the delay line using the delay echo time of flight, thereby eliminating the need for additional temperature measuring devices. Other embodiments further comprise the step of using the temperature of the delay line to determine the temperature of a test object, and using the temperature of the test object to determine a thickness of the test object that is compensated for thermal expansion and temperature dependent ultrasonic velocity. | 2011-04-21 |
20110090936 | SYSTEM AND METHOD FOR USING COHERENTLY LOCKED OPTICAL OSCILLATOR WITH BRILLOUIN FREQUENCY OFFSET FOR FIBER-OPTICS-BASED DISTRIBUTED TEMPERATURE AND STRAIN SENSING APPLICATIONS - Systems and methods are disclosed for distributed temperature and strain sensing along a length of an infrastructure. Two optical sources, such as, external cavity lasers with a narrow linewidth, are used for launching a probe signal into a sensing fiber coupled to the infrastructure, and for producing a local oscillation signal, respectively. The optical sources are coherently locked with a predefined frequency offset with respect to each other, the predefined frequency offset being in the order of the Brillouin frequency shift. The optical sources are included in an optical phase lock loop (OPLL) system. A balanced heterodyne receiver for narrow band detection at radio frequency (RF) bandwidth receives an optical signal generated by coherent mixing of a backscattered probe signal with the Brillouin frequency shift and the local oscillation signal, and produces an output indicative of one or both of a measured temperature and a measured strain. | 2011-04-21 |
20110090937 | EDDY CURRENT THERMOMETER - A remote, noncontact temperature determination method and apparatus is provided, which is operable to determine the temperature of a conducting member forming a part of or in operative thermal communication with an object of interest. The method comprises the steps of first inducing a closed vortex eddy current ( | 2011-04-21 |
20110090938 | APPARATUS, SYSTEM, AND METHOD FOR ACCURATELY READING HIGH AND LOW TEMPERATURES - According to one embodiment, an apparatus for reading a temperature of a material includes a thermistor that is communicable in temperature sensing communication with the material. The apparatus also includes a first resistor that has a first resistance and a second resistor that has a second resistance that is lower than the first resistance. Additionally, the apparatus includes a switch that is selectively controllable to electrically couple the first resistor and second resistor to the thermistor in a low temperature mode. The switch also is selectively controllable to electrically couple the second resistor to the thermistor and electrically decouple the first resistor from the thermistor in a high temperature mode. | 2011-04-21 |
20110090939 | System and Method for Management of a Shared Frequency Band - A system, method, software and related functions are provided for managing activity in a radio frequency band that is shared, both in frequency and time, by signals of multiple types. An example of such a frequency band is an unlicensed frequency band. Radio frequency energy in the frequency band is captured at one or more devices and/or locations in a region where activity in the frequency band is happening. Signals occurring in the frequency band are detected by sampling part or the entire frequency band for time intervals. Signal pulse energy in the band is detected and is used to classify signals according to signal type. Using knowledge of the types of signals occurring in the frequency band and other spectrum activity related statistics (referred to as spectrum intelligence), actions can be taken in a device or network of devices to avoid interfering with other signals, and in general to optimize simultaneous use of the frequency band with the other signals. The spectrum intelligence may be used to suggest actions to a device user or network administrator, or to automatically invoke actions in a device or network of devices to maintain desirable performance. | 2011-04-21 |
20110090940 | DUTY CYCLE CORRECTION CIRCUITRY - Closed-loop techniques for adjusting the duty cycle of a cyclical signal, e.g., a clock signal, to approach a target value. In an exemplary embodiment, a charge pump is coupled to a charge and sample module, which drives a de-skew circuit in a negative feedback loop. The charge and sample module couples the charge pump to the integration capacitor during two of four successive phases, and also couples the integration capacitor to sampling capacitors during the other two of the four successive phases. The voltages across the sampling capacitors may be used to control the de-skew circuit, which adjusts the duty cycle of a cyclical signal to be adjusted. | 2011-04-21 |
20110090941 | Method And Apparatus For Retransmitting Information - To address the need for new techniques that are able to address overlapping channel collisions various embodiments are described. They are used to introduce the concept of retransmission-permutation, in which a bit-to-subcarrier assignment is permuted ( | 2011-04-21 |
20110090942 | SYSTEM AND METHODS FOR WIRELESS NETWORKING - A networking system for wirelessly transmitting a signal between one or more computers. The system includes, in a first transceiver pair, an upper transceiver configured to be coupled to be suspended overhead and lower transceiver configured as a ground unit. The upper and lower transceivers include an RF transmitter configured to transmit a first signal as a focused beam toward the opposing transceiver and an RF receiver configured to receive the first beam signal from the opposing transceiver. The system also includes, in a second transceiver pair, an RF transmitter configured to transmit a second signal as a focused beam toward the opposing transceiver and an RF receiver configured to receive the first beam signal from the opposing transceiver. The first and second beam signals are transmitted at a 60 GHz, allowing the first and second beam signals to be transmitted at a beam spread of less than 5 degrees. | 2011-04-21 |
20110090943 | Method for Identifying Signals of the Same Origin - A method for identifying signals of the same origin is described. The signals are identified based upon a method of system analysis, wherein an accumulated value of an attenuation weighted by power of an incoming channel, the so-called correspondence coefficient, is used as the criterion whether two signals are of the same origin. | 2011-04-21 |
20110090944 | APPARATUS AND METHOD FOR SIGNAL QUALITY MEASUREMENT ON GFSK SIGNALS - The present invention discloses an effective apparatus and method to measure the received signal quality for a GFSK modulated signal with (or without) an unknown modulation index. The signal quality measurements are based on the decoded (unknown or known) bits and the trellis of the frequency discriminator output. This trellis is pre-calibrated with a reference Rx. The transmitted modulation index is also accurately estimated in this invention. | 2011-04-21 |
20110090945 | METHOD AND APPARATUS FOR COOPERATIVE MIMO TRANSMISSION OPERATION IN MULTICELL WIRELESS NETWORK - A method and apparatus of configuring a multi-cell precoding matrix for a multiple input multiple output (MIMO) operation in a wireless communication system in which a plurality of base stations participate in cooperative communication is provided. A multi-cell precoding matrix is configured using one or more single-cell precoding matrices, and wherein coefficients to be multiplied by the single-cell precoding matrices satisfy a condition in which the product between the multi-cell precoding matrix and a Hermitian matrix of the multi-cell precoding matrix is a unitary matrix. According to the embodiment of the present invention, it is not necessary for all base stations to perfectly know channel information. In addition, a feedback overhead is not high, and complexity is low. | 2011-04-21 |
20110090946 | EQUALIZER IN A WIRELESS COMMUNICATION SYSTEM - Techniques for performing equalization at a receiver are described. In an aspect, equalization is performed by sub-sampling an over-sampled input signal to obtain multiple sub-sampled signals. An over-sampled channel impulse response estimate is derived and sub-sampled to obtain multiple sub-sampled channel impulse response estimates. At least one set of equalizer coefficients is derived based on at least one sub-sampled channel impulse response estimate. At least one sub-sampled signal is filtered with the at least one set of equalizer coefficients to obtain at least one output signal. One sub-sampled signal (e.g., with largest energy) may be selected and equalized based on a set of equalizer coefficients derived from an associated sub-sampled channel impulse response estimate. Alternatively, the multiple sub-sampled signals may be equalized based on multiple sets of equalizer coefficients, which may be derived separately or jointly. The equalizer coefficients may be derived in the time domain or frequency domain | 2011-04-21 |
20110090947 | DECISION FEEDBACK EQUALIZERS AND OPERATING METHODS THEREOF - A method for updating a tap coefficient of a decision feedback equalizer is provided. The method includes sampling a first input signal received by a sampler of a decision feedback equalizer. It is determined if an amplitude of the first input signal falls within a range defined between a first predetermined voltage level and a second predetermined voltage level. If the amplitude of the first input signal falls outside the range, a tap coefficient is updated to generate an updated tap coefficient that is fed back to adjust an amplitude of a second input signal received at an input end of the decision feedback equalizer. If the amplitude of the first input signal falls within the range, the tap coefficient is free from being updated. | 2011-04-21 |
20110090948 | ADAPTIVE QAM TRANSMISSION SCHEME TO IMPROVE PERFORMANCE ON AN AWGN CHANNEL - A cable transmitter supports a number of low density parity check (LDPC) coding rates, e.g., 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9 and 9/10; and supports a number of quadrature amplitude modulation (QAM) schemes, e.g., 4-QAM, 16-QAM, 64-QAM, 256-QAM, 1024-QAM or higher. For a selected modulation scheme, the cable transmitter selects between using a non-uniform symbol constellation or a uniform symbol constellation as a function of a selected coding rate. | 2011-04-21 |