16th week of 2009 patent applcation highlights part 28 |
Patent application number | Title | Published |
20090097423 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING RESOURCE ALLOCATION INFORMATION IN A COMMUNICATION SYSTEM - An apparatus and method for transmitting/receiving resource allocation information in a communication system are provided. In the method of transmitting resource allocation information, at least one of a plurality of FDD UL FA resources is divided into a plurality of segment regions, and first resource allocation information is transmitted to mobile stations through a plurality of TDD DL FA resources. The first resource allocation information indicates, among the plurality of segment regions, each of segment regions corresponding to the TDD down link FA resources. | 2009-04-16 |
20090097424 | RADIO-TRANSMISSION SYSTEM AND METHOD OF OPERATION - The invention relates to a radio transmission system comprising a plurality of processing layers for the transmission of data packets between various radio appliances in a radio channel. A first functional unit in a physical radio transmission layer analyses the radio channel and determines the quality (QoC) of the radio channel. A second functional unit in a back-up layer controls the access to the radio channel according to the actual quality (QoC) of the radio channel and the priority of the data packets to be transmitted according to the quality (QoS) of the service carried out by the data packets. A third functional unit in a switching layer controls the switching of the data packets. A control unit then releases the data packets for switching by means of the third functional unit only when the quality (QoS) of the service carried out by the data packets corresponds sufficiently with the quality (QoC) of the radio channel determined in the first functional unit. | 2009-04-16 |
20090097425 | RADIO LINK CONTROL OPERATIONS AND ENHANCED DUPLICATE DETECTION IN A WIRELESS RECEIVER - A radio link control (RLC) entity selectively stores part or parts of a received protocol data unit (PDU) or re-segmented PDU and selectively discards other parts of the received PDU, rather than simply either discarding the whole received PDU or storing the whole received PDU. The receiving RLC entity performs duplicate detection of received data as compared to data in an RLC buffer, selects the parts of the received PDU that will be discarded (if data is duplicated), discards the selected parts of the PDU, and stores the remaining parts of the PDU. Alternatively, data can be stored regardless of duplicate detection, and the buffer data is overwritten by the stored data. | 2009-04-16 |
20090097426 | METHOD FOR IMPROVING POWER EFFICIENCY OF SUBSCRIBER STATIONS - Disclosed is a method for improving power efficiency of subscriber stations in a communication network. A subscriber station is uniquely identified by a base station using a connection Identifier (CID). The method includes splitting CIDs of subscriber stations to form a plurality of first parts and a plurality of second parts. The method includes generating an index including a plurality of entries and transmitting the index to a plurality of subscriber stations by the base station. One or more subscriber stations switch to a power-saving mode on absence of a match between each entry of the plurality of entries with an equivalent part of CIDs associated with the one or more subscriber stations, thereby conserving power and improving power efficiency of the subscriber station. Further, at least one information element in a sub-MAP message may be compressed to reduce overhead. | 2009-04-16 |
20090097427 | 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. In this regard, an Audio Video Bridging timeslot may be designated for handling an energy efficient networking (EEN) transaction and the EEN transaction may be performed during the designated timeslot. Exemplary EEN transactions comprise scheduling a data rate transition, transitioning to a different data rate, training a link partner, and exchanging training related information. It may be determined whether the timeslot may be reserved for conveying an AVB stream prior to designating the time slot for an EEN transaction. In instances that the timeslot may be unreserved, the timeslot may be reserved for EEN transaction(s). Information exchanged during the designated timeslot may enable scheduling a data rate transition and/or training on a network link. In this regard, a subsequent timeslot may be designated for the data rate transition and/or the training. | 2009-04-16 |
20090097428 | Apparatus, method, and computer program product providing improved power management in wireless networks - There are a plurality of power saving modes for a device in a wireless network. It is determined that the device is using one of the power saving modes on a peer-specific link, a state is set to indicate that the device is using that specific power saving mode, and a message is transmitted to the peer over the link that includes an indication of the state. There may also be a power management indication that indicates whether a full power state is in use of one of the power saving modes are in use. Exemplary power saving modes are light sleep and deep sleep. A method, apparatus, and computer readable medium are detailed, and exemplary environments may be practices in or by a WLAN mesh point. | 2009-04-16 |
20090097429 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A digital broadcasting system and a method for controlling the same are disclosed. A method for controlling a digital broadcast receiving system includes the steps of receiving a broadcast signal having mobile service data and main service data multiplexed therein, extracting transmission parameter channel (TPC) signaling information and fast information channel (FIC) signaling information from a data group within the received mobile service data, by using the extracted fast information channel (FIC) signaling information, acquiring a program table describing virtual channel information and service of an ensemble, the ensemble being a virtual channel group of the received mobile service data, by using the acquired program table, detecting a descriptor defining basic information required for accessing the received service, and, by using the detected descriptor, controlling the receiving system to enable access to the corresponding service. | 2009-04-16 |
20090097430 | Selective Service Method In Multicast System - A multicast service of a 3GPP Universal Mobile Telecommunications System (UMTS) is disclosed. A multicast service stream identifier is provided so that each multicast area can receive different information for one service or one multicast service can be provided with different QoSs to areas. In addition, the multicast service stream identifier is provided which can selectively receive diverse menus or channels for one multicast service provided in the same area. Thus, by providing the multicast service stream identifier, users' desires for various services can be satisfied. | 2009-04-16 |
20090097431 | Automatic weather information downloading and displaying system - The system for downloading and displaying information utilizes a computer with an Internet connection. The computer runs a program that causes it to access a weather information server with a pre-determined address, upon start-up and periodically thereafter, and to receive weather information for a given place or given places from the accessed server. A memory stores the received weather information. A controller selects successive portions of the stored weather information for transmission at predetermined time intervals. The selected portions of the stored weather information are wirelessly transmitted. The transmitted information portions are received at a remote location and checked for transmission errors. If no errors are detected, the information is displayed. In one embodiment, two-way communications between the transmission and receiver sections of the system are possible through the use of transceivers. In another, time information is also downloaded and displayed. A compensation algorithm compensates for signal processing and transmission delays. | 2009-04-16 |
20090097432 | METHOD FOR SETTING PACKET TRANSMISSION PATH IN AD HOC NETWORK, AND NETWORK APPARATUS USING THE SAME - A method of setting a packet transmission path in a wireless communication network and a network apparatus using the same are provided. A method of setting a packet transmission path includes setting N−1 routing regions including at least one node between a source node and a destination node based on a predetermined N number of hops, N denoting an integer greater than or equal to two, and determining a node in each of the routing regions as a relay node based on a channel gain. | 2009-04-16 |
20090097433 | RELAY METHOD OF WIRELESS ACCESS SYSTEMS AND BASE STATION, RELAY DEVICE AND REPLAY SYSTEM THEREOF - The present invention is directed to provide a relay method in a wireless access system, including comprising the following steps: in downlink direction, receiving downlink data from a base station, wherein the downlink data include control information for relay operation; constructing downlink data to be retransmitted; retransmitting the constructed downlink data to wireless communication terminals according to a profile specified by the control information; and, in uplink direction, receiving uplink data from the wireless communication terminals according to a profile specified by the control information; recovering the uplink data of the wireless communication terminals; and retransmitting the uplink data to the base station according to the profile specified by the control information. The present invention further provides the corresponding base station device, relay device and wireless relay system. Through the present invention, the base station is able to perform centralized control of the entire mobile multi-hop relay system, which effectively reduces the complexity of the relay device and can realize a transparent transportation with respect to wireless communication terminals. | 2009-04-16 |
20090097434 | Frame Constructing and Frame Processing Methods, Device and System In Multi-Hop Access Network - The present invention discloses a frame constructing method for use in a multi-hop wireless access network, the method comprising the steps of: determining Relay Stations (RSs) and Mobile Stations (MSs); setting a DL sub-frame; setting an UL sub-frame; and constructing a completed frame based on the UL sub-frame and the DL sub-frame; wherein the step of setting the DL sub-frame comprises a step of setting a DL relay sub-frame field for DL relay information sent to the RS; and the step of setting the UL sub-frame comprises a step of setting an UL relay sub-frame field for UL relay information sent from the RS. The present invention further discloses a corresponding frame processing method and a device, base station, relay station and system for implementing the method. According to the present invention, the synchronization in the whole network system is ensured, and the handover operation when the MS moves is simplified. Moreover, the situation that the base station and the relay stations use different frequencies can be supported. Additionally, the delay of traffic transmission is decreased. | 2009-04-16 |
20090097435 | Method and apparatus for controlling transmissions in communication systems - In a bandwidth allocation protocol for a mobile communications network, mobile terminals indicate the total quantity of data awaiting transmission, the maximum delay time of the most urgent portion of the data, and the maximum delay time of the least urgent portion. If a collision occurs between transmission by two mobiles, the mobiles wait for an interval controlled by the network before attempting another contention-based access transmission. The network periodically varies the contention-based access capacity available according to the observed usage level and/or collision rate in the previously allocated contention-based access capacity. The network analyses the forward traffic to individual mobiles and predicts likely return bandwidth requirements. The network stores associations between forward and return frequency channels, so that when a mobile receiving a forward frequency channel request return capacity, the network preferentially assigns return bandwidth to the mobile in one or more of the associated return channels. | 2009-04-16 |
20090097436 | Methods for access control in femto system - In a method for controlling access to wireless resources provided by femto cells within a femto subnet a femto management system or radio access network may control access to femto cells within the femto subnet by assigning at least one hashing class mask of a first-type or hashing class mask of a second-type to a wireless user. The hashing class mask of the first-type or hashing of the second-type class mask may be assigned based on whether the wireless user is authorized to access a first femto cell within the femto subnet. The hashing class mask of the first-type provides access to at least one first femto cell within the femto subnet. | 2009-04-16 |
20090097437 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING AN ACCESSPARAMETERS GROUP MESSAGE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting an AccessParameters group message in a wireless communication system, the method comprising generating the AccessParameters group message comprising a 2 bit AccessCycle Duration field wherein the AccessCycle Duration field determines the duration of the access cycle in units of Control Segment Periods (as defined by the Physical Layer), a 5 bit AccessSequencePartition field wherein the AccessSequencePartition field indicates the partition of the access sequence space to allow the access terminal to signal pilot power and buffer status information with the access sequence, a 4 bit MaxProbesPerSequence field wherein the MaxProbesPerSequence field determines the maximum number of probe sequence that can be part of one access sequence and is set to n+1, a 4 bit ProbeRampUpStepSize field wherein the ProbeRampUpStepSize field determines the power ramp up used for probes within a probe sequence and is set to a value 0.5*(1+n)dB, a 6 bit RDCHInitialPacketFormat field wherein the RDCHInitialPacketFormat field is set to the packet format that is used on the first transmission the access terminal makes on the R-DCH after getting an access grant, a 2 bit PilotStrengthSegmentation field wherein the PilotStrengthSegmentation field comprises a PilotThreshold1 and PilotThreshold2, a 8 bit OpenLoopAdjust field wherein the OpenLoopAdjust field determines the nominal power used by access terminal in the open loop power estimate and is set to value 70+n dB and transmitting the AccessParameters group message over a communication link. | 2009-04-16 |
20090097438 | SYSTEM AND METHOD FOR TRANSMISSIONS IN POWER SAVE MODE - System and method for power saving transmission in a wireless communications networks. In one embodiment, a communications device includes a transceiver configured to transmit or receive frames over a peer communications link to or from another communications device in a wireless communications network. The communications device also includes a controller configured to initiate a service period for transmission of data frames to the another communications device. The controller is also configured to terminate the service period following an acknowledgement to a transmission of a last data frame therein addressed to either the communications device or the another communications device. | 2009-04-16 |
20090097439 | METHOD OF CONTROLLING BROADCASTING IN A WIRELESS SENSOR NETWORK - The present invention relates to a method of controlling broadcasting in a wireless sensor network. The method includes performing broadcasting from an upper node to a lower node for a predetermined number of times, transmitting a time offset calculated according to the broadcasting from the lower node to the upper node, calculating an average of the time offsets received from at least one lower node, by the upper node and resetting the number of times of broadcasting according to the calculated average by the upper node. Accordingly, the number of times of broadcasting may be controlled according to the average of received time offsets in the wireless sensor network. In another aspect, an adjustment to the number of times of broadcasting may be received and the number of times of broadcasting may be adjusted based on an average of the received adjustments. | 2009-04-16 |
20090097440 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - In order to solve problems arising when a communication system such as a wireless LAN is constructed as a decentralized distributed type network without a relationship of control station and controlled stations such as a master station and slave stations, in a wireless communication system composed of a plurality of communication stations without a relationship of control station and controlled stations, respective communication stations transmit beacons with information concerning a network written thereon with each other to construct the network, and it becomes possible to make sophisticated judgment such as communication states of other communication stations by those beacons. | 2009-04-16 |
20090097441 | METHOD AND APPARATUS FOR SELECTING MBMS RADIO BEARER TYPE - A method and apparatus for selecting a radio bearer type for providing a service to a plurality of mobile terminals according to a count of mobile terminals obtained through responses to a service response request message from a network is provided. An MBMS radio bearer type is selected according to a count that includes RRC-connected mobile terminals that still need to establish a connection in order to receive an MBMS such that the radio bearer type established is sufficient to provide the MBMS to all mobile terminals desiring to receive the service. | 2009-04-16 |
20090097442 | METHOD AND SYSTEM FOR UTILIZING A RESERVED CHANNEL TO MANAGE ENERGY EFFICIENT NETWORK PROTOCOLS - Aspects of a method and system for utilization of a reserved and/or out of band channel for managing a data rate of an Ethernet channel are provided. In this regard, a data rate of a network link may be managed via traffic communicated over a reserved and/or out of band channel on said network link. The reserved and/or out of band channel may be an auxiliary channel established in the IEEE 802.11AN standard. Traffic communicated over the reserved and/or out of band channel may enable negotiating a data rate for the link, scheduling a change in the data rate on the link, exchanging link state information, configuring a number of active physical channels on the link, configuring a signal constellation utilized for representing data on said the link, configuring an inter-frame or inter-packet gap, and/or configuring signal levels utilized for signaling on the link. | 2009-04-16 |
20090097443 | Hierarchical Network Operating Mode in a Wireless Communications Network - A system and method for a hierarchical network operating mode in an ad hoc wireless communications network. In one embodiment, a communications node includes a controller and a transceiver. The controller is configured to create a bandwidth allocation request for other communications nodes in an ad hoc wireless communications network. The transceiver is configured to receive request grants from the other communications nodes granting the bandwidth allocations in accordance with the bandwidth allocation request, thereby establishing a hierarchical network operating mode in at least a portion of the ad hoc wireless communications network. | 2009-04-16 |
20090097444 | OVERHEAD REDUCTION OF UPLINK CONTROL SIGNALING IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and mobile terminal for transmitting data on uplink within a mobile communication system. Further the invention relates to a network entity for allocating uplink resources to such a mobile terminal. When a user equipment is transmitting uplink (UL) data according to allocated resources, it has to indicate the transport format of the current data transmission to Node B by means of UL control signaling. To propose a scheduling scheme which reduces the overhead of uplink control signaling, a method is proposed that achieves a significant reduction of the UL control signaling overhead by considering characteristics of an orthogonal radio access scheme used for evolved UTRA uplink scheme and using differential signaling of the transport format information. Although the invention is particularly suitable for uplink transmissions in an orthogonal single-carrier radio access scheme, it is not restricted to this particular embodiment. | 2009-04-16 |
20090097445 | SYSTEM AND METHOD FOR INTERFERENCE IDENTIFICATION AND FREQUENCY ALLOCATION - A system for interference detection and identification, as well as frequency allocation is described. It contains interference detection means for detecting interference on wireless radio frequencies. The interference detection means comprising discrimination means ( | 2009-04-16 |
20090097446 | METHOD AND SYSTEM TO GUARANTEE SERVICE RECEPTION WITHIN BROADCAST SYSTEM - A system and method is provided for ensuring that time for tuning to another RF channel between two TF frames in TF slicing exists while reception with a single hopping-tuner is enabled, and reception for terminals can be guaranteed when transmitting and receiving common services. An additional time for tuning is introduced for TF-sliced services, where the time for tuning can be inserted either before of after the P | 2009-04-16 |
20090097447 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range. | 2009-04-16 |
20090097448 | Methods for idle registration and idle handoff in a femto environment - In a method for configuring a wireless network, a radio access network establishes a first color code for a femto subnet and a second color code for a macro subnet. The femto subnet includes a plurality of femto cells, and the macro subnet includes at least one macro cell. The macro subnet borders the femto subnet. The radio access network identifies the plurality of femto cells bordering the macro subnet, and assigns the established first and second color codes to the identified border femto cells, while assigning only the first color code to non-bordering femto cells. | 2009-04-16 |
20090097449 | METHOD FOR HANDOVER USING RELAY STATION - A method for controlling handover using a Relay Station (RS) whose coverage includes at least one mobile station is provided. In the method, the RS monitors an uplink band allocated to a mobile station and obtains a Connection ID (CID) and a Medium Access Control (MAC) address the mobile station. The RS transmits a scanning request message including the MAC address of the mobile station to a base station. The RS then receives a scanning response message including scanning timing and scanning interval information from the base station and scans neighbor base stations using the information included in the scanning response message. This method more efficiently performs handover of mobile stations in the RS coverage. | 2009-04-16 |
20090097450 | PROVIDING VOICE CALL CONTINUITY - The present disclosure includes a system and method for enhanced voice call continuity. A method includes receiving a request to handover a call session from a radio access network to an IP-CAN. The method further includes handing over the call session to the IP-CAN independent of an Internet Protocol Multimedia Subsystem (IMS). | 2009-04-16 |
20090097451 | IDENTIFICATION OF TARGET NODE FOR WIRELESS HANDOFF - Identification of an access point to which an access terminal is to be handed-off involves, in some aspects, identifying one access point of a set of access points that may have been detected by an access terminal. For example, an access terminal may receive a signal having an identified characteristic (e.g., a particular phase offset) from an access point. Each access point of a set of access points associated with the identified characteristic may be directed to attempt to decode a signal from the access terminal. The access point of the candidate set to use for the handoff operation may then be determined based on the signal received from the access terminal, if any, by each of the candidate access points. | 2009-04-16 |
20090097452 | FEMTO CELL SYNCHRONIZATION AND PILOT SEARCH METHODOLOGY - A system, a method and computer product for synchronizing of a femto cell with a macro cell, the method comprising: placing a forward link receiver into the femto cell; receiving by a micro cellular network the femto cell transmission timing; and synchronizing the femto cell transmission timing with the macro cellular network transmission timing in reliance on the forward link receiver signal. Further, a system, a method and computer product for allocating pilot phases to femto cells, the method comprising: creating at least as many new potential pilot phases for femto cells as there are for macro cells; and allowing a mobile device on a macro cell to search and find a femto cell pilot without explicitly listing femto pilot phases in the neighbor list. | 2009-04-16 |
20090097453 | METHOD AND SYSTEM FOR FAST HANDOVERS USING DYNAMIC ROUTER ADVERTISEMENTS - The invention relates to a method for managing the movement of a mobile node from a first router in a first network to a second router in a second network, wherein the mobile node communicates with a corresponding node. In order to enable seamless communication between the mobile node and the corresponding node, the second router is dynamically configured by the first router to transmit a router advertisement message to the mobile node, the router advertisement message comprising a subnet prefix of an IP address of the mobile node, said subnet prefix belonging to the first network. A layer 3 link change as observed by the mobile node can be postponed and a default router of the mobile node can be changed to the new access router immediately after the layer 2 handover, thus enabling very fast handovers without requiring modifications to the mobile node implementations. | 2009-04-16 |
20090097454 | Apparatus and method for estimating cell load in wireless communication system - An apparatus and method for estimating a cell load in a wireless communication system are provided. The apparatus includes a ranging response counter, a load estimator, an FA handover determiner, a data rate determiner, and a handover determiner. The ranging response counter counts the number of ranging response messages that are received during one period of periodic ranging. The load estimator estimates a cell load on the basis of the number of the ranging response messages. The FA handover determiner determines an FA handover on the basis of the cell load from the load estimator. The data rate determiner controls a data rate of a service on the basis of the cell load from the load estimator and requests the controlled data rate to the system. The handover determiner controls handover parameters on the basis of the cell load from the load estimator. | 2009-04-16 |
20090097455 | ACCESS CHANNEL STRUCTURE FOR WIRELESS COMMUNICATION SYSTEM - A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading. | 2009-04-16 |
20090097456 | METHOD FOR ACHIEVING FAIRNESS IN A NETWORK - Disclosed are a method and a computer program product for achieving fairness in utilization of a channel in a network. The network includes plurality of stations such that at least one station of the plurality of stations includes at least one radio. The at least one radio may fail to access the channel even when the channel is available for performing transmission. The method includes determining a number of idle slots occurred at the channel during a disruption period when the at least one radio is unavailable for transmission. The number of idle slots occurred during the disruption period may be accumulated as a credit. Based on the accumulated credit, an initial value of a backoff counter of the at least one station may be reset. The reset initial value of the backoff counter enables the at least one radio to utilize the accumulated idle slots for next transmission. | 2009-04-16 |
20090097457 | REPEATING TRANSMISSIONS OF SIGNALS IN COMMUNICATION SYSTEMS - Methods and apparatuses for a User Equipment (UE) to transmit an acknowledgement signal over multiple Transmission Time Intervals (TTIs). The acknowledgement signal is in response to a data packet reception and is transmitted in a different resource in each of the multiple TTIs, if the data packet reception is through a scheduling assignment, or is transmitted in the same resource in each of the multiple TTIs, if the data packet reception is periodic. The UE transmitting an acknowledgement signal over multiple TTIs should not transmit additional acknowledgement signals in subsequent TTIs before the initial acknowledgement signal transmission is completed. The UE should also not transmit data signals or other control signals in the same or subsequent TTIs before completing transmission of an acknowledgement signal over multiple TTIs. | 2009-04-16 |
20090097458 | Method and System for Agent Redirecting the Terminal Request - A method and system for agent redirecting the terminal request is provided. Firstly a uniform service address is preset for each service in the terminals. The terminal initiates a service access request. The agent gateway queries the service subscribing information of the user. The agent gateway determines the type of the service requested by the terminal according to the uniform service address and queries the address of the corresponding service server. The agent gateway transmits the service access request to the service server obtained by query. The service server returns the access response of the service to the terminal via the agent gateway. The present invention can choose the suitable service server and agent redirect the service access request to the designated service server in the case that multiple servers exist by presetting the uniform service address in the terminal. In the meantime, presetting the uniform service address in the terminal can avoid the complicated configuration process of the server address in the terminal and improve the service level for the users. | 2009-04-16 |
20090097459 | METHOD FOR WAN ACCESS TO HOME NETWORK USING ONE TIME-PASSWORD - A mobile device is configured to securely access a trusted network over of wide area network. The mobile device includes a communication interface, a processor, and a memory. The mobile device connects to the trusted network via a local access point in the trusted network at a first point in time, receives a password list containing a plurality of one-time passwords from the trusted network while the mobile device is connected to the trusted network via the local access point, stores the password list in memory, subsequently connects remotely to the trusted network over a wide area network, and sends a selected one-time password from the password list to access network resources in the trusted network. | 2009-04-16 |
20090097460 | Method for contention-free NPD periodic updating - Methods and apparatus for a next-in-line protecting device to periodically broadcasting its existence in a communication system. A next-in-line protecting device periodically transmits the next-in-line codeword to inform a primary protecting device and a plurality of secondary devices that the next-in-line device still exists in a communication system. The NPD transmits the NPD codeword intelligently in order to reduce the probability of collision with the RTS codewords transmitted by the other SPDs. | 2009-04-16 |
20090097461 | METHOD AND APPARATUS FOR PROVIDING CONTENT IN WIRELESS COMMUNICATION NETWORK - A method and apparatus for providing one or more contents to one or more devices in a wireless communication network. The method includes associating the one or more contents with one or more headers corresponding to one or more data packets transmitted for the one or more devices at an anchor datapath gateway in the wireless communication network The method further includes rendering the one or more contents with data represented by the one or more data packets to the one or more devices in response to associating the one or more contents with the one or more headers. | 2009-04-16 |
20090097462 | Deployable Cellular Communication Extension System - Embodiments of systems and methods provide deployable cellular telecommunication base stations capable of sending, receiving, and extending telephone calls in areas where commercial cellular communications are unavailable. The deployable base station can send and receive cellular telephone calls via cellular communication transceivers, and relay such calls to a distant teleport via a satellite communication link. The deployable base station includes routers for encoding voice calls in voice-over IP data format and for routing calls via the satellite communication link. The deployable base station may also include land mobile radio (LMR) communication interoperability circuits to enable LMR communications to be relayed to a distant teleport. At the teleport, received communications can be routed via a public switched telephone network to an intended receiver to enable telephone communications with the global commercial network from areas lacking commercial cellular communications. | 2009-04-16 |
20090097463 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - In order to solve problems arising when a communication system such as a wireless LAN is constructed as a decentralized distributed type network without a relationship of control station and controlled stations such as a master station and slave stations, in a wireless communication system composed of a plurality of communication stations without a relationship of control station and controlled stations, respective communication stations transmit beacons with information concerning a network written thereon with each other to construct the network, and it becomes possible to make sophisticated judgment such as communication states of other communication stations by those beacons. | 2009-04-16 |
20090097464 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - In order to solve problems arising when a communication system such as a wireless LAN is constructed as a decentralized distributed type network without a relationship of control station and controlled stations such as a master station and slave stations, in a wireless communication system composed of a plurality of communication stations without a relationship of control station and controlled stations, respective communication stations transmit beacons with information concerning a network written thereon with each other to construct the network, and it becomes possible to make sophisticated judgment such as communication states of other communication stations by those beacons. | 2009-04-16 |
20090097465 | PILOT SIGNAL TRANSMISSION METHOD AND RADIO COMMUNICATION APPARATUS - In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B | 2009-04-16 |
20090097466 | METHOD FOR TRANSMITTING UPLINK SIGNALS - A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority. | 2009-04-16 |
20090097467 | RADIO COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A radio communication system of a frequency hopping system, which carries out time division multiplex by TDMA and carries out communications while changing over two or more frequencies with respect to a radio link, wherein radio resources are efficiently utilized by establishing a plurality of radio links. A first communication apparatus periodically transmits control data by a frame cycle and a second communication apparatus which is a communication partner thereof receives the above-described control information during standby and secures synchronization in timing of frames and slots and timing of frequency hopping. Communication signals between both communication apparatuses and control information are overlapped in a slot to establish radio links. Once radio links are established in a plurality of slots other than a slot for transmitting control information, control is performed such that the control information is overlapped in the slots in which a radio link is established. | 2009-04-16 |
20090097468 | WIRELESS NETWORKS FOR HIGHLY DEPENDABLE APPLICATIONS - A wireless communication system comprises one or more control units operable to transmit control signals, a plurality of actuators responsive to the control signals, and a plurality of sensors operable to transmit sensor data used by the one or more control units in generating the control signals. Each of the sensors, actuators, and one or more control units are located at a fixed position in the system relative to one another. Each of the plurality of sensors and each of the plurality of actuators are coupled to at least one of the one or more control units via a plurality of wireless paths. Each of the plurality of sensors are operable to transmit the sensor data in an assigned time slot to at least one of the one or more control units over a plurality of wireless channels in each of the plurality of wireless paths. The number of channels in each of the plurality of wireless paths is determined based, at least in part, on a worst-case estimate of potential interference, and each of the plurality of sensors is operable to pseudo-randomly switch the plurality of channels over which the sensor data is transmitted. | 2009-04-16 |
20090097469 | METHOD AND APPARATUS TO PROTECT WIRELESS NETWORKS FROM UNSOLICITED PACKETS TRIGGERING RADIO RESOURCE CONSUMPTION - A wireless communication method and wireless gateway device are provided for wireless communication between a wireless mobile station and a remote device. An unsolicited data packet is received from a remote device in which the data packet is addressed to the wireless mobile station. A determination is made as to whether to engage in a communication synchronization handshake with the remote device. The determination is based at least in part on the unsolicited data packet. A communication synchronization handshake with the remote device is performed without transmitting the received data packet to the mobile station upon determining to engage in a communication synchronization handshake with the remote device. A communication session is established with the wireless mobile station when the communication synchronization handshake with the remote device is successful. Data packets are forwarded between the wireless mobile station and the remote device when communication synchronization handshake with the remote device is successful and when communication with the wireless mobile station is established. | 2009-04-16 |
20090097470 | METHODS AND SYSTEMS FOR COMMUNICATING DATA - A method for communicating data is provided. The method includes transmitting a first request from a first device to an embedded device via a first network using a first protocol, wherein the first request includes a second request formatted according to a second protocol. The method also includes transmitting the second request from the embedded device to a second device via a second network using the second protocol. | 2009-04-16 |
20090097471 | METHOD AND APPARATUS FOR CALL PROCESSING FOR SIP AND ISUP INTERWORKING - A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to adjust a call processing logic for Session Initiated Protocol to Integrated Services Digital Network User Part (ISUP) calls based at least in part on interworking profiles assigned to ISUP trunk groups supporting the calls. Additional embodiments are disclosed. | 2009-04-16 |
20090097472 | Method and apparatus for optimizing telephony communications - There is provided a method and apparatus for determining and optimizing a transmission route for a phone call. The phone call may be either local or long distance. For a local phone call the voice data is transmitted via known local methods. For a long distance phone call, middleware determines an optimal internet terminal service provider for carrying or transmitting the voice data. The middleware determines optimal internet terminal service provider by performing a comparative analysis of several internet terminal service providers according to cost and transmission quality. | 2009-04-16 |
20090097473 | Functional extended system of network communication device and its method - A functional extended system of network communication device and its method are disclosed according to the present invention. The functional extended system of network communication device and its method are applicable to a network communication function extended equipment that is connecting to a network communication device that has universal communication transmit port, mainly it connects to the universal communication transmit port of the network communication device via an extended communication transmit port, and it also has its data processing unit and the network communication device produce a handshake based on a preset communication protocol, and then it has the data processing unit execute data process that includes at least encoding/decoding data transmitted from/to the network communication device based on the preset communication protocol, thus the data processing unit is able to drive corresponding functional extended module to execute extending function, and/or it can further connect with other functional extended system of network communication device, therefore, the network communication device is capable of extending continually. | 2009-04-16 |
20090097474 | System and method for providing location information to a public safety answering point during an emergency 911 call from a softphone - A system and method for providing location information to a public safety answering point from a softphone may include receiving, at a network access point, an emergency 911 call from the softphone. The emergency 911 call may be communicated to a public safety answering point. In response to a call connection message being received, an address location of the network access point to which the softphone is in communication in placing the emergency 911 call to the public safety answering point may be communicated in a type II caller ID data packet. The softphone may generate the type II caller ID data packet with the address location in a data field, such as a data field typically used for name information of a caller. | 2009-04-16 |
20090097475 | CODEC automatic setting system of IAD and control method thereof in DSL network - A codec automatic setting system of an IAD in a DSL network includes a codec table, a codec negotiator, a codec detector, and a codec selector. The codec table stores at least one codec list. The codec negotiator incorporates an applicable codec list from the codec table into a call request message, transmits the same to a reception IAD, and receives a response message when an arbitrary terminal requests a call. The codec detector detects a codec list from the response message. The codec selector compares the codec list of the reception IAD with the codec list stored in the codec table, and selects a settable codec. An automatic codec switching function in an IAD system of a network supporting a DSL automatically switches a codec into an optimum codec according to a DSL connection band and forming and release of a VoIP call, thereby securing an optimum communication quality for an Internet phone. | 2009-04-16 |
20090097476 | METHOD AND APPARATUS FOR SUPPORTING VOICE COMMUNICATIONS - An apparatus comprises two processors ( | 2009-04-16 |
20090097477 | METHOD AND SYSTEM FOR REALIZING MEDIA STREAM INTERACTION AND MEDIA GATEWAY CONTROLLER AND MEDIA GATEWAY - A method and system for realizing media stream interaction are provided. The method includes the following steps: the MGC obtains the public network address corresponding to the media gateway MG in the private network, and the public network address is used as the remote address of the opposite side of the MG; then, the MGC sends the public network address to the opposite side; and the opposite side realizes media stream interaction with the MG in the private network by the public network address. Using this method, the media stream passing through across different IP domains in the media gateway can be realized. Also, a media gateway controller and a media gateway are provided. | 2009-04-16 |
20090097478 | Techniques to access messaging services for branch offices - Techniques to access messaging services for branch offices are described. In one embodiment, for example, an apparatus may include a network interface for a packet-switched network, a private branch exchange for a circuit-switched network, and a gateway to couple to the network interface and the private branch exchange. The gateway may be operative to establish a packet-switched call connection with the network interface and a circuit-switched call connection with the private branch exchange. The gateway may further include a call router to route a call request over a circuit-switched network with the private branch exchange on behalf of a call terminal to access messaging services from a data center with a messaging server when the call terminal and the network interface are unavailable. Other embodiments are described and claimed. | 2009-04-16 |
20090097479 | Services Convergence Among Heterogeneous Wired and Wireless Networks - A system and method for heterogeneous network communication including wired, and wireless communication mediums for seamless data, voice, as well as multimedia applications independent of the actual communication medium, type of device, and protocols running over such communication channels. The devices are structured to operate over both wired and wireless communication mediums individually or simultaneously in the intermittent or continuous fashion in secure or non-secure mode, after obtaining explicit, implicit or no permission for usage. The system and method described herein allow the communication channels operate in their native mode of operation independent of converged application perception by user of the application, a user being a person, a machine, or any other such entity that can be identified as user. | 2009-04-16 |
20090097480 | PARALLELIZING THE TCP BEHAVIOR OF A NETWORK CONNECTION - One embodiment of the present invention provides a system that parallelizes the TCP-related actions of a network connection between two computer systems during a data transfer between the two computer systems. During operation, the first computer system partitions the data into two or more data segments, and assigns the data segments to multiple processing elements. These multiple processing elements subsequently prepare and send their assigned data segments to the second computer system in parallel using TCP. | 2009-04-16 |
20090097481 | METHOD AND SYSTEM FOR CONFIGURABLE DATA RATE VIA INTER-PACKET GAP ADJUSTMENT TO SUPPORT ENERGY EFFICIENT NETWORKS - Aspects of a method and system for programmable data rate thresholds for configurable data rate via inter-packet gap adjustment to support energy efficient networks. In this regard, an inter-packet gap may be adjusted to control a data rate on an Ethernet link. An IPG may be adjusted such that a data rate on a network link may be communicated at a non-standardized rate suited to an audio and/or video stream. An IPG may be adjusted such that data is communicated over the link at a standardized rate. In this regard, adjusting the IPG may compensate for a non-standardized data rate resulting from altering other parameters of the link. The IPG may be adjusted based on a control policy which may govern data rates on a network link. Each of a plurality of inter-packet gaps may be differently adjusted to achieve a desired average data rate on the link. | 2009-04-16 |
20090097482 | OUT-OF-BOX SERVICES CASCADING - The invention discloses an efficient approach to the cascading of out-of-box services. System comprising a packet router with out-of-box interfaces and more than one out-of-box servers performing out-of-box services, characterized in that the packet flow comprises an identifier that defines the order of out-of-box services. | 2009-04-16 |
20090097483 | METHOD AND DEVICE FOR TRANSMITTING DATA - The method of transmitting data packets associated with an importance level comprises a step ( | 2009-04-16 |
20090097484 | Method And System For Distributing Labels - A method, system and apparatus for distributing labels for multicast services. The method deploys a primary controller in the network to manage the label space on a centralized basis; the primary controller distributes a label for the multicast service upon obtaining a request for a label from the multicast service source, which ensures that unicast services and multicast services use different labels, thus solving conflicts between unicast labels and multicast labels and between multicast labels; the primary controller can also query labels for multicast members. The apparatus for distributing labels includes a message interaction unit, a information maintenance unit and a label distribution unit. | 2009-04-16 |
20090097485 | DATA DISTRIBUTION APPARATUS, DATA DISTRIBUTION METHOD, AND DISTRIBUTION CONTROL PROGRAM - Disclosed is a data distribution apparatus delivering multicast data to a terminal belonging to a multicast group, including: a table generating unit to generate a table including a source address (SA) of the terminal and a destination address (DA) for requesting the multicast data in association with port information of the terminal; an address discrimination unit to discriminate a combination of DA and SA contained in the multicast data; a forwarding destination information generation unit to generate forwarding destination information designating a forwarding destination of the multicast data by obtaining the port information in the table, corresponding to the discriminated combination, and inserts the forwarding destination information in the multicast data for transfer to a L2 switch; and a port selection unit provided in the L2 switch to select port to transfer the multicast data referring to the forwarding destination information and a routing table provided in the L2 switch. | 2009-04-16 |
20090097486 | Common Checksum Computation for Internet Protocol Version 4 and Version 6 Transmissions - Checksums for internet protocol transmissions of certain transport layer messages are generated using IPv6 pseudo-headers for both IPv4 and IPv6 internet protocol transmissions. For IPv4 transmissions, IPv4 information is mapped into an IPv6 pseudo-header, and the checksum is computed using the IPv6 pseudo-header. Among other things, embodiments of the present invention allow checksums for both IPv4 and IPv6 internet protocol transmissions such transport layer messages to be computed using a common checksum computer. | 2009-04-16 |
20090097487 | METHOD AND SYSTEM FOR TRANSMISSION OF DIGITAL AUDIO IN SPDIF FORMAT TO ONE OR MORE RECEIVERS - Methods and systems for transmission of digital audio in SPDIF format to one or more receivers may include packetizing at least one decoded SPDIF data frame to generate at least one SPDIF packet. The at least one SPDIF packet may be transmitted, via one or more networks supporting packet based communication, for processing. The at least one SPDIF packet may be received via said one or more networks supporting packet based communication. The received at least one SPDIF packet may be de-packetized to generate at least one decoded audio data frame. The generated at least one decoded audio data frame may be transmitted to at least one speaker. The one or more networks may comprise one or more of the Internet, an Intranet, a wireless LAN, and/or a Bluetooth connection. One or more channel status bits may be extracted from the decoded SPDIF data frame, prior to the packetizing. | 2009-04-16 |
20090097488 | Method for filtering packets coming from a communication network - A method of filtering packets coming from a communication network ( | 2009-04-16 |
20090097489 | METHOD FOR TRACKING TRANSMISSION STATUS OF DATA TO ENTITIES SUCH AS PEERS IN A NETWORK - A method for tracking a transmission status of one or more data elements to one or more devices. In one example, the method includes providing a list including one or more devices and one or more data elements; processing the list to determine a data element of the one or more data elements to transmit to a device of one of the one or more devices; and upon successfully transmitting the data element to the device, adjusting the list so that the list indicates that the device has received the transmitted data element. In this manner, the status of whether a particular data element has been sent to a particular device can be easily derived from the list. | 2009-04-16 |
20090097490 | COMMUNICATIONS NETWORK WITH CONVERGED SERVICES - A communications network provides one or more shared services, such as voice or video, to customers over a respective virtual private network (VPN). At the same time, each customer may have its own private data VPN for handling private company data. The shared service VPN permits users from different customers to communicate directly over the shared service VPN. Trust and security are established at the edge of the network, as the information enters from the customer's site. As a result, no additional security measures are required within the shared service VPN for the communications between users. This architecture results in a fast, high quality, shared service. | 2009-04-16 |
20090097491 | Network connection service providing device - The present invention aims to provide a network connection service providing device capable of making not only a connection to the Internet, but also, if necessary, a connection to a private network, by a so-called hotspot service for providing a network connection service wirelessly at a station, an airport, a shop, or the like, and a control unit | 2009-04-16 |
20090097492 | SUPPORT OF TRIPLE PLAY SERVICES IN USER DEVICES - Several services offered by distinct service providers can be accessed from a single user device, through one or more gateways. To ensure quality of service control, each service provider allocates a distinct address to the user device. Distinct forwarding information bases and service mappings are defined at the user device, comprising one such forwarding information base for each service provider and one service mapping for each service type offered by a given service provider. The separate addresses allocated to the user device are related to the separate service mappings. Distinct virtual local area networks (VLANs) are defined, each containing one of the forwarding information base and one of the service mappings. Tags added to packets by the gateways and arriving at the user device are used to link the packets to the proper service provider and to the proper service type. | 2009-04-16 |
20090097493 | QUEUING MIXED MESSAGES FOR CONFIGURABLE SEARCHING - The present invention provides a method and an apparatus for forming a queue that enables a real time search of a first and a second plurality of messages which enter the queue in a linear order. The method comprises providing a sequential data structure to populate the queue with the first and second plurality of messages. The method comprises using the sequential data structure to selectively configure the queue for traversing in a search order different than the linear order in which the first and second plurality of messages reach the queue. | 2009-04-16 |
20090097494 | PACKET FORWARDING METHOD AND DEVICE - A packet forwarding mechanism using a packet map is disclosed. The method includes the packet map storing a packet forwarding information of each packet, where the packet map uses a single bit to indicate whether a packet is forwarding through a specific output port. In this way, the packet forwarding information can be stored in a very simple form such that less memory space is required for storing the packet forwarding information. | 2009-04-16 |
20090097495 | FLEXIBLE VIRTUAL QUEUES - Flexible virtual queues of a switch are allocated to provide non-blocking virtual output queue (VOQ) support. A port ASIC has a set of VOQs, one VOQ per supported port of the switch. For each VOQ, a set of virtual input queues (VIQs) includes a VIQ for each input port of the port ASIC that forms a non-blocking flow with the corresponding output port (and potentially, with the specified level of service) in the switch. The port ASIC selects a VOQ for transmission and then arbitrates among the VIQs of the selected VOQ to select a VIQ from which to transmit the packet. Having identified an appropriate VIQ, the port ASIC transmits cells of the packet at the head of the VIQ to a port ASIC that includes the corresponding output port for reassemble and eventual transmission through the output port. | 2009-04-16 |
20090097496 | Video Signal Switching System - A video signal switching system wherein existing network components and the like are used to perform a switching process, thereby reducing the costs and improving the versatility as well. As a solution, a video signal switching system is provided which comprises a plurality of input port components that acquire non-packet digital consecutive signals; a plurality of output port components that output the non-packet digital consecutive signals; a packetizing unit that packetizes the acquired non-packet digital consecutive signals into packets after associating them with the input port identification information of the input port components having acquired them; a switch unit that distributes the packets to the output port components in accordance with the input port identification information associated with those packets; and a restoring unit that restores the packet signals distributed by the switch unit to the non-packet digital consecutive signals. | 2009-04-16 |
20090097497 | Flexible bandwidth allocation in high-capacity packet switches - A method and apparatus for flexible sharing of bandwidth in switches with input buffering by dividing time into a plurality of frames of time slots, wherein each frame has a specified integer value of time slots. Counters associated with the input-output queues of the switches are loaded with a negotiated integer value once per frame. The inputs sequentially select available outputs to which the inputs send packets in specified future time slots. Priority is given to input-output queues with counters having positive values. The selection of outputs by the inputs is done using a pipeline technique and a schedule is calculated within multiple time slots. The counters for selected queues are then decremented by 1. | 2009-04-16 |
20090097498 | COMMUNICATION METHOD, COMMUNICATION APPARATUS, AND INTEGRATED CIRCUIT - A communication apparatus for communicating by commonly sharing a transmission channel with another communication apparatus which performs a data transmission, comprising: a transmitting unit which transmits first data at first timing and second data at second timing subsequent to the first timing to the transmission channel; and an information adding unit which adds time slot information to the first data, the time slot information indicating a time slot during which the second data is transmitted prior to the data transmission performed by the other communication apparatus. | 2009-04-16 |
20090097499 | MULTI-PURPOSE SWITCHING NETWORK INTERFACE CONTROLLER - A network interface controller includes a plurality of scatter gather circuits ( | 2009-04-16 |
20090097500 | METHOD AND SYSTEM FOR UTILIZING A RESERVED AND/OR OUT OF BAND CHANNEL FOR MAINTAINING A NETWORK CONNECTION - Aspects of a method and system for utilization of an reserved and/or out of band channel for maintaining a network connection are provided. In this regard, information relating to training of one or more link partners communicatively coupled to an Ethernet link may be exchanged via a reserved and/or out of band channel on the Ethernet link. The reserved and/or out of band channel may be an auxiliary channel as specified by the IEEE802.1AN standard. The reserved and/or out of band channel may be utilized for scheduling training of one or more of the link partners, determining which of the link partners require training, synchronizing training of the link partners, training the link partners based on changes in environmental conditions. The training may comprise configuring an echo canceller a far-end crosstalk canceller, and/or a near-end crosstalk canceller. | 2009-04-16 |
20090097501 | METHOD AND DEVICE FOR PROCESSING FRAMES - A device and a method for processing a frame, the method includes: receiving a frame; retrieving a lookup key parse command that includes an instruction field and an bitmap representative of selected frame fields to be searched in the frame; generating a lookup key by extracting at least one frame field if the type of the received frame matches an expected frame type; and looking up, using the lookup key, for additional frame processing instructions. | 2009-04-16 |
20090097502 | Field equipment control system - A field equipment control system including: a plurality of field equipments installed in a field; and a control device for controlling the plurality of field equipments, wherein each of the field equipments has a wireless communication section for transmitting/receiving data between the field equipments, and at least one field equipment out of the plurality of field equipments, which is connected to the control device, has a communication relaying section for carrying out a data conversion between different protocols. | 2009-04-16 |
20090097503 | METHOD AND SYSTEM FOR TRANSMISSION OF DECODED MULTI-CHANNEL DIGITAL AUDIO IN SPDIF FORMAT - A method and system for processing multi-channel audio data may include selecting one or more SPDIF data frames from a plurality of decoded multi-channel audio data frames. The selected one or more SPDIF data frames, header information corresponding to the one or more SPDIF data frames, and/or one or more channel status bits corresponding to the one or more SPDIF data frames may be packetized. The one or more channel status bits may indicate one or more audio channels for the selected one or more SPDIF data frames. The indication of the one or more audio channels may be stored in at least one multi-channel mode field of the one or more channel status bits. The packetized one or more SPDIF data frames may be from a single audio channel and/or from a plurality of audio channels. | 2009-04-16 |
20090097504 | Method for Exchanging Information Among Digital Units In a Distributed System - Method for exchanging information among digital units in a distributed system, with digital units being defined by at least a master node and slave nodes, comprising the step of transferring information references from said master node to said slave nodes, said information references being sampled with sampling time corresponding to a cycle time period defined by clock value of said master node; wherein the method comprises further steps of estimating the number of said information references sampled arrived to said slave node from said master node during a periodic reference time interval, and using said number to recalculate the master clock value, so that said slave nodes are able to reconstruct master node information reference during a following reference time interval. | 2009-04-16 |
20090097505 | Multiplexing Network System And Digital Information Transferring Method - In a multiplexing network system in which media devices are interconnected through a digital transmission path, during system startup, a device that is used as a master device holds management information for recognizing bands used by media devices connected to the digital transmission path and management information for recognizing what type of data is output/received between the media devices. During the system startup, the master device refers to the management information to set the compression rates of data streams transferred between the media devices to be variable. | 2009-04-16 |
20090097506 | Multiservice system and method for packet and time division multiplexed transport - A system and method are presented for providing packet and time division multiplex (TDM) services in a data communication interface. The method accepts packets at a first rate over a packet interface, and transfers time-sensitive data in the packets as packet data units (PDUs) having a smaller number of bits than a packet and a second rate, faster than the first rate. The method transforms the PDUs into frames in a first TDM protocol. Typically, the PDUs are transformed into units having a smaller number of bits than the PDU and a third rate, faster than the second rate. Then, the TDM frames are transmitted over a line interface. | 2009-04-16 |
20090097507 | Wavelength and Intensity Stabilized Laser Diode and Application of Same to Pumping Solid-State Lasers - An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source stable in both spectrum and intensity, in conjunction with automatic power control wherein the feedback loop accurately reflects the true drift in the output power. Moreover, the pump efficiency is optimized and the optical noise is minimized by adjusting the diode operation temperature such that the pump wavelength coincides with the absorption peak of the gain medium. By internally or externally modulating the amplitude of the drive current, the pump diode(s) operate in pulsed mode with controllable shape, width, repetition rate, and pulse-to-pulse intervals, which enables essentially constant optical energy produced from each pulse of the solid-state laser in high repetition rates with variable pulse-to-pulse intervals. | 2009-04-16 |
20090097508 | Fiber Laser Arrangement Having A High Beaming Power - A fiber laser arrangement having a high beaming power includes a plurality of continuously operating coherent individual fiber lasers. Pumping energy generated by a common master oscillator operated in the longitudinal mode is distributed to the fiber lasers by way of a fiber splitter, in a branched manner. An integrated electro-optical phase shifter is assigned to each individual fiber laser, and can be controlled by an electronic control system. By appropriate displacements of the optical phases in individual phases of the fiber laser arrangement atmospheric turbulence effects on the propagation path of the laser radiation to a target are compensated in order to obtain an optimal focusing of the entire laser radiation onto the remote target. | 2009-04-16 |
20090097509 | Laser Apparatus - This utility model discloses a type of laser apparatus comprising a back mirror, a YV04 crystal, a Q-SW crystal, a front mirror, an optical pumping source, an optical fiber splice, a directional light-regulating lens and a laser head. The back mirror is a plano-concave lens, the incidence point of optical pumping source is deviated from the end surface center of YV04 crystal by 0-2 mm; under the back mirror there is a back mirror regulator; under the Q-SW crystal there is a Q-SW crystal regulator; above the front mirror there is a lens regulator; the laser head is located in front of the back mirror, the directional light-regulating lens is set in front of the laser head, the optical fiber splice is set in front of the directional light-regulating lens and under the lens there is a lens regulator. During use, the optical pumping source may generate two laser resonance paths, thus the laser conversion can be improved, Nd—YV04 is heated uniformly; Because there are two laser resonance paths, so the laser cavity length has a wide range of application: 40 mm-200 mm, in such a way that the technical difficulty in manufacturing the laser cavity is reduced. | 2009-04-16 |
20090097510 | Optical Parametric Micro-Oscillator Comprising Couplet Cavities - The invention relates to the field of optical parametric oscillators (OPO), especially to an essentially vertical monolithic system (S) for parametric conversion from a pump wave with a pump wavelength, said system comprising at least two resonant cavities ( | 2009-04-16 |
20090097511 | LASER LIGHT SOURCE AND METHOD OF OPERATING THE SAME - A laser light source comprises a semiconductor laser adapted for pulsed operation, a partially transmitting wavelength selective light reflector. The semiconductor laser comprises a front facet and a back facet. The front facet and the back facet define an internal laser cavity. The internal laser cavity comprises a laser active medium. The partially transmitting wavelength selective light reflector has a peak reflectivity within a gain bandwidth of said laser active medium. The wavelength selective light reflector and the back facet define an external laser cavity. A roundtrip time of light in the external laser cavity is about 20 nanoseconds or less. A full width half maximum bandwidth of the wavelength selective light reflector is adapted to accommodate at least 12 longitudinal modes of the internal laser cavity and at least 250 longitudinal modes of the external laser cavity. | 2009-04-16 |
20090097512 | Optical pulse sources - An optical pulse source comprising a DPSS pump laser, a photonic crystal fiber (PCF), and acousto-optic modulator (AOM) gating device is disclosed. The pump pulses are coupled through lenses to the AOM gating device, which is synchronized to the pump laser and is operable to gate the pump pulses to a reduced repetition rate Rr=Rf/N, where Rf is the pump laser fundamental frequency. The pulses from the AOM are injected via optics into the PCF. Propagation through the PCF causes the pulses to broaden spectrally to produce optical supercontinuum pulses. An optical pulse source that further includes an acousto-optical tunable filter (AOTF) operable to convert the optical supercontinuum pulses into wavelength variable output pulses is also provided. A method of scaling the energy of the optical supercontinuum pulses is also disclosed. | 2009-04-16 |
20090097513 | Failure Protection Apparatus and System - A safety and interlock circuit for use with devices which could cause injury if an error condition causes improper operation. A control program executing on a processor monitors a variety of device conditions, including pulse over-duration threshold, diode over-current threshold, pulse lock-out duration, temperature threshold, and pulse repetition frequency limit, and prevents the laser from firing if an error condition is detected. In addition, the error conditions are logged in a persistent memory to facilitate subsequent diagnosis and correction. | 2009-04-16 |
20090097514 | FEMTOSECOND LASER PROCESSING SYSTEM WITH PROCESS PARAMETERS, CONTROLS AND FEEDBACK - A femtosecond laser based laser processing system having a femtosecond laser, frequency conversion optics, beam manipulation optics, target motion control, processing chamber, diagnostic systems and system control modules. The femtosecond laser based laser processing system allows for the utilization of the unique heat control in micromachining, and the system has greater output beam stability, continuously variable repetition rate and unique temporal beam shaping capabilities. | 2009-04-16 |
20090097515 | YB: AND ND: MODE-LOCKED OSCILLATORS AND FIBER SYSTEMS INCORPORATED IN SOLID-STATE SHORT PULSE LASER SYSTEMS - The invention describes classes of robust fiber laser systems usable as pulse sources for Nd: or Yb: based regenerative amplifiers intended for industrial settings. The invention modifies adapts and incorporates several recent advances in FCPA systems to use as the input source for this new class of regenerative amplifier. | 2009-04-16 |
20090097516 | RF and microwave receivers based on electro-optic optical whispering gallery mode resonators - RF receivers based on whispering gallery mode resonators. | 2009-04-16 |
20090097517 | VCSEL DEVICE AND METHOD FOR FABRICATING VCSEL DEVICE - Provided is a VCSEL device that includes a substrate on which at least a first semiconductor multilayer film of a first conductivity type, an active region, and a second semiconductor multilayer film of a second conductivity type are stacked. The second semiconductor multilayer film forms a resonator together with the first semiconductor multilayer film. A conductive first protecting layer is formed in an area in the second semiconductor multilayer film. The area includes at least an emission outlet that emits laser light. An annular electrode is formed on the first protecting layer, and the emission outlet is formed in the annular electrode. An encapsulating material encapsulates at least the first protecting layer and the annular electrode. | 2009-04-16 |
20090097518 | Vertical cavity surface emitting laser diode and a method for producing the same - A vertical cavity surface emitting laser diode (VCSEL) with a new structure is disclosed. The VCSEL of the invention provides the active layer, the first spacer layer, the tunnel junction, the second spacer layer burying the tunnel junction. Only the first spacer layer is ion-implanted to form a high-resistive region around the tunnel junction. The current injected into the second spacer layer is confined by the tunnel junction to reach the active layer, which reduces the increase of the parasitic resistance of the device. The high-resistive region around the tunnel junction reduces the parasitic capacitance of the device. | 2009-04-16 |
20090097519 | Semiconductor Laser and Method for Producing the Semiconductor Laser - A semiconductor laser is embodied as a surface emitting thin-film semiconductor laser ( | 2009-04-16 |
20090097520 | INEXPENSIVE VARIABLE REP-RATE SOURCE FOR HIGH-ENERGY, ULTRAFAST LASERS - System for converting relatively long pulses from rep-rate variable ultrafast optical sources to shorter, high-energy pulses suitable for sources in high-energy ultrafast lasers. Fibers with positive group velocity dispersion (GVD) and self phase modulation are advantageously employed with the optical sources. These systems take advantage of the need for higher pulse energies at lower repetition rates so that such sources can be cost effective. | 2009-04-16 |
20090097521 | Side Surface Light Emitting Semiconductor Element And Method Of Manufacturing The Same - A side surface light emitting semiconductor element includes: an AlGaN layer doped with Mg at a concentration equal to or less than 5×10 | 2009-04-16 |
20090097522 | VERTICAL CAVITY SURFACE EMITTING LASER DEVICE - A vertical cavity surface emitting laser device is provided that comprises a monolithically integrated grating ( | 2009-04-16 |