29th week of 2011 patent applcation highlights part 29 |
Patent application number | Title | Published |
20110176535 | Technique for Synchronizing a Terminal Device with a Wireless Network - The invention relates to a technique for controlling a synchronization of a terminal device ( | 2011-07-21 |
20110176536 | HEIRARCHICAL PROTOCOL CLASSIFICATION - A hierarchical protocol classification and signaling method specifies the interworking protocols used to send circuit-switched signaling messages to and from a mobile terminal in a packet-switched network. A set of possible interworking protocols are divided into two more classes that correspond to different types of interworking protocols. Within each class, different versions of the interworking protocol are specified by a revision value. The versions of the interworking protocols within a given class are may be denominated such that the versions with a higher revision value are backward compatible with versions having a lower value. When a circuit services domain message is sent from a sending device to a receiving device, an interworking option specifying the class/revision of the interworking protocol is transmitted along with circuit services domain messages. The interworking option may be inserted into the header of a tunneling packet containing the circuit services domain message. | 2011-07-21 |
20110176537 | METHOD AND SYSTEM FOR PRESERVING TELEPHONY SESSION STATE - A method and system for preserving session state in telephony communication including initializing a communication session of telephony communication between a telephony device and an application server; routing the telephony communication through a call router; storing session state for the communication session of the telephony device and the application server; and transmitting the stored session state in communication between the application server and the call router. | 2011-07-21 |
20110176538 | METHOD OF CALL TRACE ON MEDIA GATEWAY OF NEXT GENERATION NETWORK - The present invention discloses a method of call trace on a next generation network (NGN) media gateway (MG). According to the present invention, a softswitch device adds an extended trace indication to an H.248 message related to the call to be traced; the MG determines whether the received H.248 message needs to be traced according to the extended trace indication; and if the H.248 message needs to be traced, trace the call to which the transaction in the H.248 message belongs. By the method, the MG can trace the entire calling process of a call. | 2011-07-21 |
20110176539 | METHOD AND DEVICE FOR PROCESSING MULTIMEDIA MESSAGING SERVICE NOTIFICATION MESSAGE AND MULTIMEDIA MESSAGING SERVICE RECEIVING SYSTEM - A method and a device for processing a multimedia messaging service notification message and a multimedia messaging service receiving system are provided. The method for processing a multimedia messaging service notification message includes: receiving the multimedia messaging service notification message, and adding the multimedia messaging service notification message into a preset processing queue; setting a processing identifier which is used for indicating whether there is a circuit switch domain/a packet switch domain service being processed currently; judging whether there is a circuit switch domain/a packet switch domain service being processed currently according to the processing identifier, wherein if YES, it maintains the multimedia messaging service notification message in the processing queue for the purpose of being processed, and if NO, it reads a prior multimedia messaging service notification message from the processing queue for processing. | 2011-07-21 |
20110176540 | Network Telephony System - The present invention includes a network telephone having a microphone coupled to provide voice data to a network, a speaker coupled to facilitate listening to voice data from the network, a dialing device coupled to facilitate routing of voice data upon the network, a first port configured to facilitate communication with a first network device, a second port configured to facilitate communication with a second network device and a prioritization circuit coupled to apply prioritization to voice data provided by the microphone. | 2011-07-21 |
20110176541 | SYSTEM, METHOD AND APPARATUS FOR SUPPORTING E911 EMERGENCY SERVICES IN A DATA COMMUNICATIONS NETWORK - A system, method and apparatus for supporting enhanced 911 (E911) emergency services, in a data communications network that includes Voice over Internet Protocol (VoIP) telephones. A network system includes a host network communicatively coupled to an E911 database management system, a network access device, and a VoIP telephone communicatively coupled to an input port of the network access device. The network access device is adapted to assign a physical location identifier to an input port, to authenticate the VoIP telephone, wherein the authentication includes receiving a unique device identifier from the VoIP telephone, and to transmit the location identifier and the unique device identifier to the E911 database management system. The E911 database management system is permitted to store the physical location identifier in association with the unique device identifier. | 2011-07-21 |
20110176542 | TRANSPORTING REAL TIME VIDEO FRAMES OVER AN ETHERNET NETWORK - Systems and methods for real time data processing using a switching network and multiple digital signal processors (DSPs). In an embodiment, the system includes a first digital signal processor having a video port interface, a first interface disposed between the video port interface of the first digital signal processor and a switching network, a second digital signal processor having a video port interface, and a second interface disposed between the video port interface of the second digital processor and the switching network. The first interface is configured to parse a VSYNC line of a video frame that is output from the first digital signal processor via its video port interface to generate a multiplexing table based upon which scan lines of the video frame are broken up into packets compatible with the switching network such that the packets can be transmitted over the switching network and be received by the second interface and the second digital signal processor via its video port interface. | 2011-07-21 |
20110176543 | METHOD AND APPARATUS FOR REDUCING EFFECTS OF LOST PACKETS ON REDUNDANCY REDUCTION IN COMMUNICATION NETWORKS - A capability is provided for reducing the effects of lost packets on algorithms used for reducing or eliminating redundant traffic in cellular wireless networks. An encoding node encodes a target packet using a reference packet from a packet cache of the encoding node, and transmits the encoded packet to a decoding node having a packet cache. The decoding node receives the encoded packet and attempts to decode the encoded packet to recover the target packet. The decoding node detects that the reference packet identified in the encoded packet is missing from the packet cache of the decoding node. The decoding node generates a control packet identifying the missing reference packet and transmits the control packet to the encoding node. The encoding node receives the control packet and processes the reference packet stored in the packet cache of the encoding node in a manner for preventing use of the reference packet, by the encoding node, for encoding packets for transmission to the decoding node. | 2011-07-21 |
20110176544 | Link aggregation flood control - A network interfaced unit includes a first data processing device, a second data processing device coupled to the first data processing device, memory coupled to the first data processing device, and instructions accessible from the memory by the first data processing device. The instructions are configured for causing the first data processing device to carry out operations for causing a copy of a frame received by the second data processing device to be received by the first data processing device in response to a destination address of the frame failing to be found in an address lookup table accessibly by the second data processing device and for causing the first data processing device to query other network interface units after receiving the copy of the frame for determining if the destination address of the frame has been learned on any one of the other network interface units. | 2011-07-21 |
20110176545 | Source Specific Multicast Group to Source Mapping - A system and method of generating a channel address. The method includes mapping a first address, obtained from a membership report, to a second address to generate a channel address. A multicast network device (MND) for subscribing one or more hosts on a multicast network to one or more channels is disclosed. The MND includes a memory containing a first address and a SSM mapping engine configured to map the first address to a second address to generate a channel address, identifying a channel, in response to the first address contained in the memory. | 2011-07-21 |
20110176546 | SYSTEMS AND METHODS FOR REDUCING MULTICAST TRAFFIC OVER A NETWORK - A method for reducing multicast traffic over a network is described. A control request is received. A first ranking indicator associated with the control request is compared with a second ranking indicator associated with a node that received the control request. A first response to the control request is generated. The first response is stored in a queue. A second response associated with the control request is received. The first response is removed from the queue without being sent to the network. | 2011-07-21 |
20110176547 | Method of Broadcasting Data by a Multicast Source with Broadcasting of an Identifier of the Broadcasting Strategy in a Multicast Signalling Channel - A method of broadcasting data from a multicast source (S) to a plurality of receivers (CL) in a telecommunications network ( | 2011-07-21 |
20110176548 | Method and System For Service Preparation of a Residential Network Access Device - The invention relates to a method and system of service preparation of a residential network access device from one or more remote provisioning devices to prepare said residential network access device to receive a network service over a communications network. The method comprises the steps of receiving a line identifier indicating a physical line used by said residential network access device to connect to said communication network; transmitting an IP address from said one or more provisioning devices to said residential network access device for which said line identifier has been received, said IP address being a source address for said residential network access device, and transmitting software code portions to said IP address of said residential network access device, said software code portions being required for receiving said network service. | 2011-07-21 |
20110176549 | METHOD OF BUS CONFIGURATION TO ENABLE DEVICE BRIDGING OVER DISSIMILAR BUSES - Several local IEEE1394 buses are bridged together over a second bus type to create a global bus wherein each local bus node is able to address nodes across the global bus without the local nodes being aware of the bridging operation. A bridging device operates by translating local bus node addresses to a global bus for communication over the second bus type. Alternatively, the local bus node identification process is controlled by the bridging device operating as the root node to cause the local nodes to be identified with a node address that is unique for the global network. The second bus type operates as a backbone for the global network and can be any type of communication bus or network with capability to transport the local bus traffic. The bridging devices that interface the local IEEE1394 buses to the backbone contain portals specific to each bus type that can communicate data between the dissimilar buses. | 2011-07-21 |
20110176550 | METHOD FOR FORWARDING PROTOCOL FRAMES IN SPANNING RINGS AND A SHARED NODE OF MULTI-RINGS IN THE ETHERNET - The present invention provides a method for forwarding a protocol frame in spanning rings, applied to the Ethernet ring network including a crossed or tangent ring and sub-ring. The method comprises steps as follows: when an interconnection node of the ring and the sub-ring receives a protocol frame from a sub-ring, if the topology of the sub-ring is changed, the interconnection node updates its address forwarding table according to the address updating information carried in the protocol frame, and sends the address updating information to the ring; the nodes of the ring update their address forwarding table respectively according the updating information. The present invention selectively sends information of sub-ring protocol frame to the ring via the interconnection node of the ring and the sub-ring. Such scheme that information of the sub-ring protocol frame is selective sent at the interconnection node not only solves the problem of updating address in spanning rings, but also decreases the amount of protocol frames sent from the sub-ring to the ring, and thereby greatly improves the performance and efficiency of the network. | 2011-07-21 |
20110176551 | Information Handling System Data Center Bridging Features with Defined Application Environments - Information handling system network traffic is managed by populating a DCBX client framework with application network parameters associated with predetermined applications. Network devices, such as information handling system clients and servers, retrieve a TLV from a switch to obtain application network parameters for an application and apply the parameters so that the application executing on the device tags network communications with the associated parameters, such as bandwidth, loss less behavior, priority, latency, through put and CPU utilization. | 2011-07-21 |
20110176552 | MANAGING INTERWORKING COMMUNICATIONS PROTOCOLS - Systems and methods for managing interworking protocols are provided. According to one embodiment, a service management system (SMS) communicatively coupled with multiple service processing switches of a service provider provisions transport network interfaces of the service processing switches to provide a transport between subscriber interfaces of the service processing switches. The subscriber interfaces are configured to communicate data in accordance with a first protocol. The transport network interfaces configured to communicate data in accordance with a second protocol. The SMS causes a first-protocol-over-second-protocol (FPoSP) Virtual Private Network (VPN) to be created through which subscriber sites securely exchange data by establishing a virtual router (VR) within the service processing switches corresponding to each subscriber interface. The VRs communicate the data among the service processing switches by encapsulating packets received from the subscriber sites within packets of the second protocol and transmitting the encapsulated packets through the transport network interfaces. | 2011-07-21 |
20110176553 | SYSTEM AND METHOD FOR SEAMLESS SWITCHING THROUGH BUFFERING - A method of preparing data streams to facilitate seamless switching between such streams by a switching device to produce an output data stream without any switching artifacts. Bi-directional switching between any plurality of data streams is supported. The data streams are divided into segments, wherein the segments include synchronized starting points and end points. The data rate is increased before an end point of a segment, to create switch gaps between the segments. Increasing the data rate can include increasing a bandwidth of the plurality of data streams, for example by multiplexing, or compressing the data. | 2011-07-21 |
20110176554 | PACKET RELAY APPARATUS AND METHOD OF RELAYING PACKET - The packet relay apparatus is provided. The packet relay apparatus includes a receiver that receives a packet; and a determiner that determines to drop the received packet without storing the received packet into a queue among the multi-stage queue. The determiner determines to drop the received packet at a latter stage, based on former-stage queue information representing a state of a queue at any former stage which the received packet belongs to and latter-stage queue information representing a state of a queue at the latter stage which the received packet belongs to. | 2011-07-21 |
20110176555 | CONTROLLING NETWORKED MEDIA CAPTURE DEVICES - Disclosed embodiments allow media players and other electronic devices that operate under a first protocol to control the media capture devices that operate with a second protocol which may not be configurable to communicate with the first protocol. In one embodiment of the disclosure, a network device may store and/or render content within a Digital Living Network Alliance (DLNA) network and/or assist in content delivery for a DLNA device on a network. In another embodiment of the disclosure, a media capture device uses the Internet Protocol. | 2011-07-21 |
20110176556 | METHOD AND APPARATUS FOR REDUCING REDUNDANT TRAFFIC IN COMMUNICATION NETWORKS - A capability is provided for reducing or even eliminating redundant traffic in cellular wireless networks. A method is provided for encoding a target packet in a manner for reducing redundancy of information in the target packet. The method includes identifying a region of the target packet that matches a region of a stored packet, removing, from the target packet, the identified region of the target packet from the target packet, and inserting, within the target packet, an encoding key comprising a hash of the stored packet. A method is provided for reconstructing a packet from an encoded packet that is encoded in a manner for reducing redundancy of information in a network. The method includes identifying an encoding key within the encoded packet, wherein the encoding key comprises a hash of a stored packet, retrieving the stored packet using the hash of the stored packet, removing the encoding key from the encoded packet, and inserting information from the stored packet within the encoded packet. | 2011-07-21 |
20110176557 | APPARATUS AND METHOD FOR CONTROLLING BUFFER USING PLAY TIME AS IMAGE TRANSMISSION - Disclosed is a buffer controlling apparatus and method using a play time during image transmission. The buffer controlling method using the play time during the image transmission includes controlling a transmission bit rate with respect to packets to be transmitted to a reception buffer based on bit capacity with respect to packets of the reception buffer, controlling a number of transmission frames with respect to the packets to be transmitted to the reception buffer based on a play time with respect to the packets of the reception buffer, and generating the packets to be transmitted corresponding to the transmission bit rate and the number of the transmission frames, and transmitting the generated packets to the reception buffer. | 2011-07-21 |
20110176558 | MULTICHANNEL INTERFACING DEVICE HAVING A SWITCHING CIRCUIT - The invention relates to an interfacing device for transmission through interconnections used for sending a plurality of electrical signals. | 2011-07-21 |
20110176559 | COMMUNICATION CIRCUIT, COMMUNICATION NETWORK, AND CONNECTING APPARATUS - The present invention provides a communication circuit, a communication network, and a connecting apparatus that can realize communication with very high reliability using a simple wiring system. | 2011-07-21 |
20110176560 | COMMUNICATION CIRCUIT, RELAY CONNECTING CIRCUIT, AND COMMUNICATION NETWORK - The present invention provides a communication circuit, a relay connecting circuit, and a communication network that have a very simple configuration and high reliability, and can transmit/receive contact signals usable for automatic control. | 2011-07-21 |
20110176561 | TIME-BASED MAINTENANCE VIA A PACKET-ORIENTED DIGITAL INTERFACE IN RADIO-FREQUENCY TRANSMITTING AND RECEIVING ASSEMBLIES - Disclosed herein are techniques, systems, and methods relating maintaining a time base between receiving and transmitting assemblies during interruption of data streams communicated therebetween. | 2011-07-21 |
20110176562 | STATISTICAL MULTIPLEXING USING A PLURALITY OF ENCODERS - A plurality of programs are statistically multiplexed using a statistical multiplexing (stat mux) system. R | 2011-07-21 |
20110176563 | CVD SINGLE CRYSTAL DIAMOND MATERIAL - Single crystal diamond material produced using chemical vapour deposition (CVD), and particularly diamond material having properties suitable for use in optical applications such as lasers, is disclosed. In particular, a CVD single crystal diamond material having preferred characteristics of longest linear internal dimension, birefringence and absorption coefficient, when measured at room temperature, is disclosed. Uses of the diamond material, including in a Raman laser, and methods of producing the diamond are also disclosed. | 2011-07-21 |
20110176564 | Methods of Modulating a Quantum Dot Laser and a Multisection Quantum Dot Laser - A multisection quantum dot laser ( | 2011-07-21 |
20110176565 | MULTI-BEAM LASER CONTROL SYSTEM AND METHOD - A multi-beam laser beam control system includes a laser transmitter configured to emit light in a plurality of beamlets. A sensor is configured to receive light from the beamlets. A processor is communicably coupled to the sensor and configured to compute a relative phase of a wavefront of at least one beamlet based on output from the sensor. A controller is communicably coupled to the processor and to the laser transmitter. The controller is configured to adjust a phase of at least one of the beamlets. | 2011-07-21 |
20110176566 | SEMICONDUCTOR LASER PUMPED SOLID-STATE LASER DEVICE - A compact semiconductor laser pumped solid-state laser device is provided that can suppress unnecessary parasitic oscillation in a microchip and efficiently extract energy. The semiconductor laser pumped solid-state laser device comprises: a solid-state laser core | 2011-07-21 |
20110176567 | MULTIBEAM ARRAYS OF OPTOELECTRONIC DEVICES FOR HIGH FREQUENCY OPERATION - A VCSEL array device formed of a monolithic array of raised VCSELs on an electrical contact and raised inactive regions connected to the electrical contact. The VCSELs can be spaced symmetrically or asymmetrically, in a manner to improve power or speed, or in phase and in parallel. The VCSELs include an active region positioned between two mirrors generating a pulsed light operating at a frequency of at least 1 GHz. The VCSELs having an output power of at least 120 mW. The raised VCSELs and raised inactive regions are positioned between the electrical contact and an electrical waveguide. | 2011-07-21 |
20110176568 | NITRIDE SEMICONDUCTOR LASER DIODE - A nitride semiconductor laser diode includes a second conductive cladding layer formed on an active layer, and including a ridge portion having a raised cross-sectional shape, and flat portions located on both sides of the ridge portion; a light-absorbing layer formed on each of the flat portions, and having an optical absorption coefficient larger than the second conductive cladding layer. The light-absorbing layer includes a first region provided at a side of a light-emitting facet, and having a distance Di1 from a line-symmetric axis in a longitudinal direction of the ridge portion to a side surface of the light-absorbing layer; and a second region provided at a side opposite to the light-emitting facet, and having a distance Di2 from the line-symmetric axis to the side surface of the light-absorbing layer. A relationship between the Di1 and the Di2 is represented by Di12011-07-21 | |
20110176569 | GROUP-III NITRIDE SEMICONDUCTOR LASER DEVICE, AND METHOD FOR FABRICATING GROUP-III NITRIDE SEMICONDUCTOR LASER DEVICE - Provided is a group-III nitride semiconductor laser device with a laser cavity enabling a low threshold current, on a semipolar surface of a support base the c-axis of a hexagonal group-III nitride of which tilts toward the m-axis. In a laser structure | 2011-07-21 |
20110176570 | Semiconductor light emitting device - A semiconductor light emitting device includes a first-conductivity-type first multilayer film reflecting mirror, and a second-conductivity-type second multilayer film reflecting mirror; a cavity layer; and a first conductive section, a second conductive section, and a third conductive section. The cavity layer has a stacked configuration including a first-conductivity-type or undoped first cladding layer, an undoped first active layer, a second-conductivity-type or undoped second cladding layer, a second-conductivity-type first contact layer, a first-conductivity-type second contact layer, a first-conductivity-type or undoped third cladding layer, an undoped second active layer, and a second-conductivity-type or undoped fourth cladding layer. The first conductive section is electrically connected to the first multilayer film reflecting mirror, the second conductive section is electrically connected to the second multilayer film reflecting mirror, and the third conductive section is electrically connected to the first contact layer and the second contact layer. | 2011-07-21 |
20110176571 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREFOR - A semiconductor light emitting device of double hetero junction includes an active layer and clad layers. The clad layers include an n-type layer and p-type layer. The clad layers sandwich the active layer. A band gap energy of the clad layers is larger than that of the active layer. The band gap energy of the n-type clad layer is smaller than of the p-type clad layer. | 2011-07-21 |
20110176572 | VCSEL WITH NON-CIRCULAR MESA AND CURRENT CONFINEMENT APERTURE FOR HIGHER-ORDER LATERAL MODE EMISSION - A vertical cavity surface emitting laser (VCSEL) ( | 2011-07-21 |
20110176573 | Silicone Leaded Chip Carrier - In an embodiment, the invention provides a SLCC package comprising first and second electrically conductive terminals, a polysiloxane and glass fiber structural body, a light source and a polysiloxane encapsulant. The first and second electrically conductive terminals are attached to the polysiloxane and glass fiber structural body. The light source is electrically connected to the first and second electrically conductive terminals. The polysiloxane and glass fiber structural body has a cavity that contains at least a portion of the polysiloxane encapsulant. | 2011-07-21 |
20110176574 | SOLID-STATE LASER DEVICE - A solid-state laser apparatus | 2011-07-21 |
20110176575 | POWER SUPPLY SYSTEM FOR A POLYPHASE ARC FURNACE WITH AN INDIRECT CONVERTER BETWEEN A MAINS CONNECTION AND A FURNACE TRANSFORMER - In a power supply system for a three-phase arc furnace ( | 2011-07-21 |
20110176576 | MELTING FURNACE - A melting furnace of the present invention includes a sealed container containing an inert gas atmosphere, a crucible that is located inside the sealed container and melts a raw material by induction heating, and a crucible cooling mechanism. The crucible cooling mechanism includes a pipe portion that includes an intake that communicates with the sealed container and enables the inert gas to be discharged from the sealed container, and an outlet that enables the inert gas to be introduced into the sealed container, a heat exchange portion that is located partway along the pipe portion, and a gas transporting portion that is located partway along the pipe portion. | 2011-07-21 |
20110176577 | SUPERPIXEL MULTI-WAVEBAND PHOTODETECTOR ARRAY FOR REMOTE TEMPERATURE MEASUREMENT - A multi-waveband temperature sensor array, in which each superpixel (e.g., 2×2 pixel cell) operates at a distinct thermal infrared (IR) waveband (e.g. four wavebands) is disclosed. Using an example high spatial resolution, four-band thermal IR band photodetector array, accurate temperature measurements on the surface of an object can be made without prior knowledge of the object emissivity. The multiband photodetector may employ intersubband transition in III-V semiconductor-based quantum layered structures where each photodetector stack absorbs photons within the specified wavelength band while allowing the transmission of photons in other spectral bands, thus efficiently permitting multiband detection. This produces multiple, spectrally resolved images of a scene that are recorded simultaneously in a single snapshot of the FPA. From the multispectral images and calibration information about the system, computational algorithms are used to produce the surface temperature map of a target. | 2011-07-21 |
20110176578 | Devices and Methods for Exercise Monitoring - The disclosure relates to methods and devices for monitoring e.g., fatigue levels by measuring a subject's body core temperature. In one embodiment, microwave radiometry is used to measure such core temperature. | 2011-07-21 |
20110176579 | MULTI-LAYERED THERMAL SENSOR FOR INTEGRATED CIRCUITS AND OTHER LAYERED STRUCTURES - A compact resistive thermal sensor is provided for an integrated circuit (IC), wherein different sensor components are placed on different layers of the IC. This allows the lateral area needed for the sensor resistance wire on any particular IC layer to be selectively reduced. In a useful embodiment, first linear conductive members are positioned in a first IC layer, in parallel relationship with one another. Second linear conductive members are positioned in a second IC layer in parallel relationship with one another. Conductive elements connect the first linear members into a first conductive path, and the second linear members into a second conductive path. A third conductive element extending between the first and second layers connects the first and second conductive paths into a single conductive path, wherein the path resistance varies with temperature. The path resistance is used to determine temperature. | 2011-07-21 |
20110176580 | TECHNIQUES FOR ENABLING COMPATIBILITY OF ULTRA WIDEBAND DEVICES | 2011-07-21 |
20110176581 | METHOD AND APPARATUS FOR PILOT SIGNAL PROCESSING IN A WIRELESS COMMUNICATION SYSTEM - A wireless communication system is provided that spreads pilot signals, or channel state information reference signals (CSI-RSs), using a spreading code chosen from a set of mutually unbiased bases (MUBs). The advantages of such spreading with MUBs are that multiple base stations can send their pilot signals on a same time-frequency resources, making the pilot signal design very efficient and also improving channel estimation at a user equipment through orthogonal and quasi-orthogonal spreading which gives a gain above noise and interference. A short spreading code chosen from MUBs may be used for spreading pilot signals transmitted from each antenna of a base station within a time-frequency resource comprising multiple closely-spaced subcarriers in frequency and/or multiple closely-spaced symbols in time. | 2011-07-21 |
20110176582 | COMMUNICATION DEVICE WITH TESTING - Communication devices and methods are disclosed, wherein a test signal is generated at a first frequency and a higher harmonic of said test signal is received and processed at a second frequency higher than said first frequency. | 2011-07-21 |
20110176583 | WIRELESS COMMUNICATION SYSTEM AND METHOD FOR PERFORMING COMMUNICATION IN THE WIRELESS COMMUNICATION SYSTEM - Provided are a wireless communication system and a method of performing communication in the same. The wireless communication system includes a terminal configured to classify all subcarriers into a first group and a second group and allocate subcarriers of the first group to first symbols and subcarriers of the second group to the first symbols again to generate and transmit a first transmission signal, a base station configured to allocate the subcarriers of the first group to second symbols and the subcarriers of the second group to third symbols to generate and transmit a second transmission signal, and a relay configured to receive the first and second transmission signals and perform maximum likelihood (ML) determination of frequency domain signals of the first and second transmission signals to estimate the first to third symbols. | 2011-07-21 |
20110176584 | COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A communication system including: a first device that includes first and second units and a first encapsulation unit encapsulating data; a second device that includes a third unit communicating data with the second unit, a fourth unit, and a second encapsulation unit encapsulating data; a third device that includes a fifth unit communicating data with the first or third unit, a sixth unit, and a third encapsulation unit encapsulating data; and a fourth device that includes a seventh unit communicating data with the first or third unit, an eighth unit communicating data with the fifth unit, and a fourth encapsulation unit encapsulating data; wherein at least two of the first to fourth devices include control units that control the units that the at least two of the first to fourth devices have, so as not to transfer received data to other devices. | 2011-07-21 |
20110176585 | METHOD FOR RELAYING OF RELAY HAVING MULTIPLE ANTENNA IN WIRELESS COMMUNICATION SYSTEM - A method for relaying performed by a relay station is provided. The method includes receiving a signal from a source station through at least one receive antenna, defining a connection structure between the at least one receive antenna and at least one transmit antenna, processing the signal by using a midcoding matrix, and transmitting the processed signal to a destination station through the at least one transmit antenna. Quality of signal transmission can be enhanced. | 2011-07-21 |
20110176586 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, RECEPTION DEVICE, TRANSMISSION/RECEPTION DEVICE, COMMUNICATION MODULE, AND ELECTRONIC DEVICE - It is possible to reduce a noise component mixed in an analog signal while suppressing increase of power consumption. An amplification unit amplifies the inputted analog signal and converts the amplified signal into a digital signal of a predetermined format for output. The amplification unit includes: an analog circuit unit for processing an analog signal; and a digital circuit unit for processing a digital signal; wherein the circuits are arranged on a substrate. The analog circuit unit includes: an amplification circuit for amplifying the inputted analog signal; and an LPF for cutting off a high frequency component of the amplified analog signal. The digital circuit unit includes: a rectification circuit which rectifies a waveform of the signal whose high-frequency component is cut off; and digital output circuit which converts the waveform-rectified signal into a digital signal of a predetermined format for output. | 2011-07-21 |
20110176587 | METHOD OF REDUCING EMISSION OF ELECTROMAGNETIC RADIATION ON HIGH SPEED COMMUNICATION BACKPLANE - A method is provided that includes transmitting data to a backplane from a first communication module simultaneously on a first pair of operating frequencies, where the first pair of operating frequencies includes first and second operating frequencies. The method further provides that a −3 dB point of a first electromagnetic emission spectrum peak originating from transmission of the data at the first operating frequency is outside a −3 dB point of a second electromagnetic emission spectrum peak originating from transmission of the data at the second operating frequency. | 2011-07-21 |
20110176588 | METHOD AND DEVICE FOR DATA PROCESSING AND COMMUNICATION SYSTEM COMPRISING SUCH DEVICE - A method and a device for data processing are provided, wherein a first network element conveys data towards a second network element at least one frequency at, e.g., a precalculated reduced transmission power to feign signal-to-noise ratio. Furthermore, a communication system is suggested comprising said device. | 2011-07-21 |
20110176589 | METHODS AND SYSTEMS FOR MEASURING DATA PULSES - Some embodiments disclosed herein relate to a method. In the method, a duration of a first synchronization pulse is measured. A fixed, predetermined number of ticks are equally spaced at a first time interval over the first sync pulse, regardless of the duration of the first synchronization pulse. A duration of a first data pulse is then measured by periodically incrementing a tick count value at the first time interval during the entire duration of the first data pulse. The tick count value at an end of the first data pulse is then correlated to a first digital value encoded on the first data pulse. | 2011-07-21 |
20110176590 | Wireless Communication System Mapping Data Bits to Symbol Bit Positions According to Error Rates of Those Bit Positions and Data Content - A transmitter-receiver pair encode data as transmitted symbols according to knowledge about variations in noise immunity between different bit positions of the symbols as a decoded. High usefulness data may be preferentially encoded at those bit positions having greatest noise immunity to improve transmission effectiveness. | 2011-07-21 |
20110176591 | LOAD INSENSITIVE QUADRATURE POWER AMPLIFIER POWER DETECTOR - A power detector includes a first phase shift element implemented to shift a phase of a first input signal to generate a first phase-shifted signal, a second phase shift element implemented to alter a phase of a second input signal to generate a second phase-shifted signal, a combiner for combining the first phase-shifted signal and the second phase-shifted signal to generate a combined single-phase signal, and a single element power detector for determining a power of the combined single-phase signal. | 2011-07-21 |
20110176592 | SYSTEM AND METHOD FOR OPTIMIZING USE OF CHANNEL STATE INFORMATION - The present invention relates to a combiner, channel identifier, OFDM receiver and method for optimizing use of channel state information of a received signal. The method comprises analyzing a received signal in a time domain and extracting from the received signal characteristics of a communication channel. The method furthermore comprises determining a dynamic indicator of channel station information accuracy based on the characteristics of the received signal. Additionally, the method comprises applying a weight to the channel state information according to the dynamic indicator. | 2011-07-21 |
20110176593 | METHODS AND DEVICES FOR UPLINK TRANSMIT DIVERSITY - Methods and devices are described for use in a wireless communications system supporting uplink transmit diversity. If it is detected that a user equipment is currently in one of a predetermined set of situations, a set of restrictions associated with the detected situation is applied when the user equipment changes pre-coding weights. The set of restrictions limits how much the pre-coding weights can be changed. A user equipment in soft handover may also be restricted to only consider feedback information from a serving base station when selecting pre-coding weights. Thus it is possible to ensure that pre-coding weights are carefully selected in situations where there is a high risk for detrimental interference and/or inferior uplink/downlink performance. A network node may be configured to detect such a situation and notify the user equipment of any restrictions to be applied on the pre-coding weight selection. | 2011-07-21 |
20110176594 | Method, Apparatus and System for Returning Signal Error in Multi-Carrier Communication System - A method for returning a signal error in a multi-carrier communication system is disclosed. A specific sub-carrier interval is determined. The specific sub-carrier interval is larger than an interval between adjacent sub-carriers in the multi-carrier communication system. A signal error is returned to a central office end on a corresponding frequency in a communication frequency band of the multi-carrier communication system at the specific sub-carrier intervals. | 2011-07-21 |
20110176595 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block. | 2011-07-21 |
20110176596 | Wireless Communication System Controlling Transmission Parameters of Data Units According to Data Usefulness - A wireless transmission system identifies priorities of data units and changes at least one of the physical transmission rates of the bits of the data unit, the order of transmission of the data units; and the number of retransmission attempts of the data units based on their individual priorities. | 2011-07-21 |
20110176597 | CLOCK JITTER SUPPRESSION METHOD AND COMPUTER-READABLE STORAGE MEDIUM - A value held in storage elements coupled to a clock buffer and variably set with a threshold voltage is read out in a state where an analyzing target circuit within an IC operates. An analyzing process specifies an impact of noise in a power supply or ground voltage of the clock buffer and a location where the impact is large, based on the threshold voltage and position information of the storage element from which the read out value has an inverted relationship to the set logic value and each storage element that is a read target. A constraint condition for placement of constituent elements of the IC and routing therein is created from results of the analyzing process, and a re-placement or re-routing process re-places or re-routes the constraint condition to reduce the noise. | 2011-07-21 |
20110176598 | NETWORK EVENT DETECTION - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying network events. In one aspect, a method includes monitoring signal characteristic values for signals transmitted over a communications channel of a power line communications system and determining that a signal level value for the channel is less than a threshold signal level value for the channel. In response to determining that the signal level value for the channel is less than the threshold signal level value for the channel, computing a signal to noise ratio for the communications channel and determining that the signal to noise ratio for the channel exceeds a threshold value. In response to determining that the signal to noise ratio for the communications channel exceeds the threshold value, storing data received over the communications channel as valid data. | 2011-07-21 |
20110176599 | Rate-Adaptive Multiple Input/Multiple Output (MIMO) Systems - A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system performance measure. In addition, the system may also jointly determine the best modulation, coding, power control, and frequency assignment for each link, based on an overall system performance measure. In OFDM systems, the number of independent streams, as well as the modulation, coding, and power control, may be determined on a tone-by-tone basis based on an overall system performance measure. | 2011-07-21 |
20110176600 | STATISTICAL MULTIPLEXING USING A PLURALITY OF TWO-PASS ENCODERS - A plurality of programs are statistically multiplexed using a plurality of two-pass encoders. Pictures in the plurality of programs are encoded in a first encoding pass using a plurality of first encoding modules. R | 2011-07-21 |
20110176601 | Image processing apparatus and method - Disclosed herein is an image processing apparatus, including, a header information production section configured to produce, regarding each of divisional code streams obtained by dividing a code stream having a structure of a progression order produced by coding image data, header information at a start and an end of the divisional code stream, the header information including a characteristic amount of an image of the image data, and a packet production section configured to convert each of the divisional code streams into a packet using the header information produced by the header information production section. | 2011-07-21 |
20110176602 | SYSTEMS AND METHODS FOR INTERFACING A WHITE SPACE DEVICE WITH A HOST DEVICE - Information is communicated from a host device to a receiving device via white space. A white space device is interfaced with the host device. The white space device has at least one port configured to communicatively interface with a host device to receive multimedia content from the host device. The white space device also optionally has a television band engine configured to encode a transport stream containing at least a portion of the multimedia content received from the host device. A transmitter is configured to transmit the transport stream via white space. | 2011-07-21 |
20110176603 | METHOD FOR CARRYING META-DATA OVER DIGITAL VIDEO BROADCASTING-SATELLITE SECOND GENERATION (DVB-S2) STREAMS OVER THE PHYSICAL-LAYER FRAMING STRUCTURE - A method of inserting meta-data into a physical layer framing structure of a Digital Video Broadcast Satellite-Generation 2 (DVB-S2) comprising encoding meta-data and an original carrier signal using an encoder, the original carrier signal having a pilot sequence, replacing, by a meta-data insertion device, at least a portion of the pilot sequence with at least a portion of the meta-data to form a meta-pilot carrier signal, modulating, using a modulator, the meta-pilot carrier signal to form a modulated meta-pilot carrier signal, and transmitting, using a transmitting device, the modulated meta-pilot carrier signal. Additionally, the meta-data may be inserted by a meta-data insertion device into at least a portion of the XFECFRAME structure when dummy-PL Frames are available when VCM and ACM operation is used. | 2011-07-21 |
20110176604 | TERMINAL, IMAGE DISPLAY METHOD, AND PROGRAM - A terminal comprises a reception unit that receives image data compressed by using inter-frame prediction: and a first conversion unit that converts a first predictive frame in the image data received by said reception unit or a predictive frame immediately after switching made by a user switching request into a non-predictive frame and outputs said non-predictive frame. | 2011-07-21 |
20110176605 | VIDEO ENCODING AND DECODING APPARATUS AND METHOD - Video encoding and its corresponding decoding are disclosed. The video encoding incorporates: a predictor for predicting a pixel value of each pixel in a current block of the video to generate a predicted pixel value; a subtractor for calculating a difference between an original pixel value of the pixel in the current block and the predicted pixel value of the pixel in the current block to generate a residual signal; a transformer for transforming the residual signal into frequency coefficients; a quantizer for quantizing the transformed frequency coefficients; and an encoder for encoding the quantized frequency coefficients by using one of different variable length coding tables. | 2011-07-21 |
20110176606 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - The present invention can suppress the generated code quantity for each image increment so as not to exceeding the target code quantity without having a usage quantizing factor deviate greatly in a sure manner. | 2011-07-21 |
20110176607 | IMAGE ENCODING/DECODING METHOD AND APPARATUS USING BLOCK TRANSFORMATION - Video encoding/decoding method and apparatus using a block transformation are disclosed. The apparatus encodes the video through predicting each pixel in a current block of the video by using one or more adjacent pixels, which are encoded prior to encoding the current block and have the closest proximity to the pixels respectively in a predetermined prediction direction, and wherein the current block is sized L×M with L being unequal to M. It has become possible to predict the pixels in the block starting from closest one of the pixels in the prediction direction in order to provide more accurate block predictions and then raise the compression efficiency that leaps to more efficient video encoding/decoding performance. | 2011-07-21 |
20110176608 | METHOD AND APPARATUS FOR DETERMINING INTRA PREDICTION MODE, AND METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO USING SAME - Disclosed are a method and apparatus for determining an intra prediction mode, and for encoding/decoding video using the same. An apparatus for determining an intra prediction mode is provided, the apparatus comprising a calculator to calculate a variation of adjacent pixels to a current block; a threshold setter to set a threshold to evaluate the pixel variation; a comparator to compare between the variation and the threshold; a first prediction mode determination unit to determine a single predetermined prediction mode to be an optimal prediction mode if the variation is below the threshold; and a second prediction mode determination unit to determine a particular prediction mode from a plurality of prediction modes to be the optimal prediction mode through a rate-distortion optimization by performing intra predictions in the plurality of prediction modes if the variation is greater than or equal to the threshold. | 2011-07-21 |
20110176609 | MULTI-FORMAT VIDEO DECODER AND RELATED DECODING METHOD - A multi-format video decoder includes a bitstream buffer, a system controller, a bitstream decoding unit, an intra mode decoding unit and a shared prediction module. The system controller selectively generates a first control signal or a second control signal according to a video bitstream. The bitstream decoding unit generates a decoding information signal according to the video bitstream when receiving the first control signal. The intra mode decoding unit generates an intra mode signal when receiving the second control signal. The shared prediction module performs an AC/DC prediction upon a current block of the video bitstream to generate a current first prediction result according to the decoding information signal and performs an intra prediction upon the current block to generate a current second prediction result according to the intra mode signal. The shared prediction module includes shared components being utilized in the AC/DC prediction and the intra prediction. | 2011-07-21 |
20110176610 | PROPAGATION MAP - A method comprises receiving original encoded video stream as one input, accessing encoded data divided into slices which are further divided into blocks, receiving the list of possible changes or watermarks as another input, accessing at least one block, decoding each slice, setting down each slice, extracting from the list those changes that apply to the at least one block, and constructing propagation maps from inter-prediction or intra-prediction using changes for the at least one block. The method can further comprise decoding luminance data using the propagation maps, comparing the luminance data to a fidelity threshold, and applying possible changes or watermarks to those not exceeding the fidelity threshold. | 2011-07-21 |
20110176611 | METHODS FOR DECODER-SIDE MOTION VECTOR DERIVATION - An exemplary method for decoder-side motion vector derivation (DMVD) includes: checking a block size of a current block to be encoded and accordingly generating a checking result; and utilizing a DMVD module to refer to the checking result to control conveyance of first DMVD control information which is utilized for indicating whether a DMVD coding operation is employed to encode the current block. When the checking result indicates a predetermined criterion is satisfied, the first DMVD control information is sent in a bitstream; otherwise, the first DMVD control information is not sent. | 2011-07-21 |
20110176612 | Motion Prediction Method - The invention provides a motion prediction method. First, a plurality of candidate units corresponding to a current unit of a current frame is determined A plurality of motion vectors of the candidate units is then obtained. A plurality of temporal scaling factors of the candidate units is then calculated according to a plurality of temporal distances between a plurality of reference frames of the motion vectors and the current frame. The motion vectors of the candidate units are then scaled according to the temporal scaling factors to obtain a plurality of scaled motion vectors. Finally, a motion vector predictor for motion prediction of the current unit is then selected from the candidate units according to the scaled motion vectors. | 2011-07-21 |
20110176613 | Motion Prediction Method and Video Encoding Method - The invention provides a motion prediction method. First, a plurality of motion vector predictors is obtained to be included in a candidate set for motion prediction of a current unit of a current frame. Whether the current frame is a non-reference frame which is not referred to by other frames for motion prediction is then determined. When the current frame is not the non-reference frame, any motion vector predictor corresponding to a previously coded frame is removed from the candidate set, and a motion vector of the current unit is predicted according to the motion vector predictors of the candidate set. | 2011-07-21 |
20110176614 | IMAGE PROCESSING DEVICE AND METHOD, AND PROGRAM - The present invention relates to an image processing device and method, and program, wherein compression efficiency can be improved. | 2011-07-21 |
20110176615 | METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR BASED ON REDUCED MOTION VECTOR PREDICTOR CANDIDATES - A method and apparatus for encoding and decoding a motion vector of a current block. The method of encoding including: generating information about the motion vector based on a motion vector of a current block and a motion vector predictor of the current block by estimating the motion vector and determining a first motion vector predictor candidate from among a plurality of motion vector predictor candidates as the motion vector predictor based on a result of the estimating; and generating a virtual motion vector by using a second motion vector predictor candidate and the information about the motion vector, generating vector differences between the virtual motion vector and the plurality of motion vector predictor candidates, comparing the vector differences with the information about the motion vector, and selectively excluding the second motion vector predictor candidate according to the comparing. | 2011-07-21 |
20110176616 | FULL RESOLUTION 3D VIDEO WITH 2D BACKWARD COMPATIBLE SIGNAL - Items are used to encode or in encoding a stereoscopic video signal. The signal includes first view frames based on a first view associated with a first eye perspective and second view frames based on a second view associated with a second eye perspective. The encoding includes receiving the stereoscopic video signal and determining the first view frames and the second view frames. The encoding also includes encoding the first view frames based on the first view and encoding the second view frames based on the second view and also the first view. In the encoding, a plurality of the encoded second view frames reference at least one first view frame for predictive coding information. Items are also used to decode the encoded stereoscopic video signal. | 2011-07-21 |
20110176617 | ONBOARD NETWORK SYSTEM NETWORK ARCHITECTURE - A method is present for transferring information in an aircraft network data processing system. A message is received from a process executing on the aircraft network data processing system for a destination to form a pending message. The pending message is received using a common protocol for processes executing in the aircraft network data processing system. A communication service is identified from a number of communication services for use in sending the message to the destination remote to the aircraft network data processing system to form a selected communication service in response to receiving the pending message. A new message is formed from the pending message. The new message has a format usable by an associated protocol for the selected communication service. The new message is sent to the destination using the selected communication service. | 2011-07-21 |
20110176618 | Device method and system for communicating data - Disclosed is a method, circuit and system for communicating data. A data value to be transmitted from a data source transmitter or transceiver to a downstream receiver or transceiver may be Shannon mapped, by functionally associated processing/mapping logic, to a point on a shape within a higher dimensional plane. Different portions of the shape, for example branches of a spiral, may be designated by a portion or branch number. Coordinates of the Shannon mapping, or another descriptors, of the Shannon mapped point may be transmitted using analog transmission methods. A set of data values may be Shannon mapped and transmitted to a downstream receiver/transceiver in series. For each set of mapped and transmitted data values, processing logic may calculate a branch ambiguity resolution factor. The branch ambiguity resolution factor for each set of values may be transmitted to the downstream receiver/transceiver before, after or with the data values. Decoding logic associated with the downstream receiver/transceiver may then use the branch ambiguity resolution factor to convert/decode received coordinates associated with the set of values into the data values. | 2011-07-21 |
20110176619 | RETRANSMISSION GRANT HANDLING IN A WIRELESS COMMUNICATIONS SYSTEM - A method, an apparatus, and a computer program product for wireless communication are provided that may help account for scenarios in which a transport block size (TBS) for a retransmission may be determined based on a first grant, while a number of resource blocks (RBs) assigned for the retransmission may be determined from a second grant. | 2011-07-21 |
20110176620 | SYSTEMS, DEVICES, AND METHODS FOR TRAINING SEQUENCE TRANSMISSION AND RECEPTION - A training sequence helps optimize SNR degradation in a wireless communication. Various sets of training sequences may be stored in a repository, and transmitters and receivers encoded with such sequences transmit at least one of the sequences between them as part of the wireless transmission of data. | 2011-07-21 |
20110176621 | PROPAGATION CHANNEL ESTIMATION APPARATUS, RECEIVER, AND PROPAGATION CHANNEL ESTIMATION METHOD - An apparatus includes a selection unit that selects an estimation target path to be used to estimate a propagation channel estimation value, among a plurality of paths based on a characteristic value of each path; a determination unit that determines an estimated reception time at which a signal as a target of estimation of the propagation channel estimation value among signals propagating through the estimation target path is received; an estimation unit that estimates an amplitude and a phase of the signal propagating through the estimation target path at the estimated reception time as a propagation channel estimation value of the estimation target path; and a processing unit that performs an interpolation/extrapolation process using the propagation channel estimation value of the estimation target path to estimate the propagation channel estimation value at a time other than the estimated reception time of the signal propagating through the estimation target path. | 2011-07-21 |
20110176622 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS - A transmitting apparatus that converts a transmission digital signal to a high-frequency analog signal and transmits the high-frequency analog signal using a plurality of transmission frequencies, the transmitting apparatus including: a dividing unit that divides a transmission signal sequence into a plurality of blocks; a sub-block generating unit that applies pre-coding processing to the blocks and further divides the blocks after the pre-coding processing into sub-blocks; a frequency allocating unit that generates a frequency signal in which the sub-blocks are allocated to the transmission frequencies; and an inverse DFT processing unit that transforms the frequency signal into a time signal, wherein the transmitting apparatus sets the time signal as the transmission digital signal. | 2011-07-21 |
20110176623 | MATRIX POWER AMPLIFIERS FOR HIGH SPEED WIRELESS APPLICATIONS - A wireless communication device includes an RF transceiver configured to up convert a base band signal to a transmitting RF signal, a configurable matrix power amplifier circuit configured to amplify the transmitting RF signal to produce an amplified RF signal, and an antenna configured to transmit a wireless signal in response to the amplified RF signal. | 2011-07-21 |
20110176624 | OFDM Networks with Pseudo-Random Phase Precoding - In an orthogonal frequency division multiplexing (OFDM) network, a set of pseudo random sequences (PRS) are stored at a transmitter and a receiver. Each OFDM symbol is mapped to subcarriers for a set of transmit antennas to produce a mapped symbol. The mapped symbol is encoded using a pseudo-random phase precoder (PRPP) and the PRS to produce a precoded symbol. An inverse fast Fourier transform (IFFT) is applied to the precoded symbol, and the encoded symbol is transmitted to the receiver using the set of transmit antennas. | 2011-07-21 |
20110176625 | METHOD AND DEVICE FOR OBTAINING AT LEAST ONE CALIBRATION FREQUENCY FOR CALIBRATING A TRANSMISSION CHAIN, CORRESPONDING COMPUTER PROGRAM PRODUCT AND CORRESPONDING STORAGE DEVICE - A method is provided for obtaining a calibration frequency for calibrating a transmission chain that can transmit information signals on a frequency band comprising a plurality of channels. The chain includes an amplifier that can be configured according to at least one gain configuration. The method includes: obtaining an output power value of the amplifier; obtaining a frequency dispersion, based on the power value; detecting whether a constraint linked to said frequency dispersion is satisfied; and if the constraint is not satisfied, then obtaining a current frequency subband and a calibration frequency for said current frequency subband. | 2011-07-21 |
20110176626 | Pilot Signal Determination Method and Wireless Communication System Using the Same - The present invention disclose a pilot signal determination method for a wireless communication system. The wireless communication system utilizes a plurality of sub-carriers. The pilot signal determination method includes steps of generating at least one vector corresponding to at least one sub-channel; and determining a plurality of pilot signals according to the at least one vector. | 2011-07-21 |
20110176627 | Multi-user Transmission Method, Multiple Input Multiple Output Transmission System Using the Same, Scheduling Method and Access Point Using the Same - The present invention discloses a multi-user (MU) transmission method for a multiple input multiple output (MIMO) transmission system comprising a first station and a plurality of second stations. The MU transmission method includes the step of the first station performing simultaneous transmission to a first group of stations of the plurality of second stations in a first transmission interval. | 2011-07-21 |
20110176628 | SYMBOL TIMING RELATIVE OFFSET MULTI ANTENNA SYSTEM AND METHOD - A multi-antenna communication method. A transmitter accepts a plurality of n data sources, and a plurality of MT independent data streams are prepared for transmission through a plurality of MT different antennae. The transmitter introduces a sub-symbol offset between symbols in the plurality of MT independent data streams transmitted by adjacent ones of the plurality of MT different antennae. Receivers for receiving and processing the Mτ independent data streams are also provided. | 2011-07-21 |
20110176629 | DOWNLINK TRANSMISSION IN A MULTIPLE-USER MULTIPLE-INPUT MULTIPLE-OUTPUT ("MU-MIMO") WIRELESS COMMUNICATION SYSTEM - Information transmission in a multiple-input multiple-output (“MIMO”) wireless communication system is provided. In one embodiment, a method for transmitting information in a MIMO wireless communication system, comprising updating channel quality information (“CQI”) values of a plurality of wireless devices, wherein updating said CQI values consider the effects of interference from transmissions to those wireless devices associated with a pre-assigned companion codeword set; pairing said plurality of wireless devices using at least said CQI values, a precoding matrix index (“PMI”) value and said pre-assigned companion codeword set, wherein said pre-assigned companion codeword set, pre-assigned companion codewords associated with said pre-assigned companion codeword set and said PMI value are updated for each of said plurality of wireless devices; precoding the information for each of said plurality of wireless devices using said PMI value; and transmitting said precoded information to each of said plurality of wireless devices. | 2011-07-21 |
20110176630 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication apparatus which prevents deterioration of communication characteristics because of a transmission weight of a greatest common factor and enhances the communication characteristics of feedback MIMO. A wireless communication apparatus having a plurality of antennas includes a reception unit for obtaining channel state information of channels of signals received from another wireless communication apparatus, a channel state information calculation unit for calculating an average value of the channel state information, selecting channels having the channel state information equal to or higher than a threshold based on the average value and calculating representative channel state information of the predetermined frequency band overall from the channel state information of the selected channels, a transmission weight selection unit for selecting a transmission weight based on the representative channel state information, and a transmission unit for transmitting identification information of the transmission weight to the another wireless communication apparatus. | 2011-07-21 |
20110176631 | COMMUNICATION METHOD FOR MIMO COMMUNICATION SYSTEM - A communication method for a MIMO communication system comprises the steps of: transmitting a plurality of first streams modulated in a non space division multiplexing manner from a transmitter to a plurality of receiving stations; and transmitting a plurality of second streams following the plurality of first streams modulated in a space division multiplexing manner from the transmitter to the plurality of receiving stations. Each of the first streams comprises a legacy short training field, a legacy long training field, a legacy signal field and at least a very high throughput signal field, and each of the first streams has the same length. Each of the second streams comprises a very high throughput short training field, a plurality of very high throughput long training fields and a data field, and each of the second streams has the same length. | 2011-07-21 |
20110176632 | METHOD OF TRANSMITTING UPLINK DM-RS MULTIPLEXED WITH DATA IN UPLINK MIMO TRANSMISSION - Provided is a multi-layer transmission method of multiplexing and transmitting data and a demodulation reference signal (DM-RS) sequence in an uplink digital Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) transmission employing multiple-input multiple-output (MIMO). The method includes allocating one DM-RS sequence as a DM-RS sequence of a first transmission layer for uplink transmission; allocating a DM-RS sequence whose cyclic shift (CS) value having the same sequence as the DM-RS sequence of the first transmission layer is configured to differ from that of the DM-RS sequence as a DM-RS sequence of a second transmission layer; and multiplexing layer-specific data and the layer-specific DM-RS sequences according to each of the first and second transmission layers. Accordingly, an RS can be transmitted in more OFDM symbols of a slot or subframe without an increase in overhead. Consequently, it is possible to satisfy requirements of LTE-advanced that a high frequency spectrum and a high mobile velocity should be supported, and transmit and receive a DM-RS multiplexed with data while maintaining orthogonality. | 2011-07-21 |
20110176633 | METHOD AND SYSTEM FOR ORTHOGONALIZED BEAMFORMING IN MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) COMMUNICATION SYSTEMS - A method and system for orthogonalized beamforming in multiple user multiple input multiple output (MU-MIMO) communication systems are presented. Aspects of the method and system include an iterative method for computing a plurality of beamforming matrices in a MU-MIMO system. A transmitting station, such as an access point (AP) for example, may use computed channel estimates, and/or singular vector matrices, to compute orthogonal beamforming matrices. The computed orthogonal beamforming matrices may be used to generate a plurality of signals, which may be concurrently transmitted to the plurality of user devices. | 2011-07-21 |
20110176634 | METHOD AND APPARATUS FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus for Channel State Information-Reference Signal (CSI-RS) allocation and a method for CSI-RS transmission using the same in a wireless communication system. A CSI-RS for each antenna port is allocated to REs or subcarriers on a basis of a symbol or symbol axis in a subframe or Resource Block (RB), and is allocated in such a manner that a distance between neighboring CSI-RS allocation REs or subcarriers may be 3 REs or subcarriers. Accordingly, in the range of following CSI-RS transmission overhead, CSI-RSs are allocated to a time-frequency resource domain in such a manner so as to have perfect orthogonality or quasi-orthogonality according to cells or cell groups. Then, the CSI-RSs, which have been allocated to the time-frequency resource domain, are transmitted. | 2011-07-21 |