A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver (200) is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver (200), receiving at least one of identification information and setting information from the wireless power receiver (200), receiving a control error packet from the wireless power receiver (200), and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.

Wireless power transfer method, apparatus and system

A block-request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be served by the file server, which might or might not include a cache. A client device can be adapted to take advantage of the ingestion process as well as including improvements that make for a better presentation independent of the ingestion process. In the block-request streaming system, the an ingestion system generates data according to erasure codes and the client device, through various selection and timing of requests for media data and redundant data, can efficiently decode media to provide for presentations.

Enhanced block-request streaming using cooperative parallel HTTP and forward error correction

This technology pertains to a data-processing device and a data processing method that make it possible to ensure good communication quality when using an LDPC code to transmit data. In group-wise interleaving, an LDPC code having a code length (N) of 16,200 bits and a code rate (r) of 10/15 or 12/15 is interleaved on a per-bit-group basis, each bit group being 360 bits long. In group-wise deinterleaving, the interleaved LDPC code is restored to the original ordering thereof. This technology can be applied, for example, to data transmission or the like using an LDPC code.

Data processing device and data processing method

A block request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be served by the file server. The system might include controlling the sequence, timing and construction of block requests, time based indexing, variable block sizing, optimal block partitioning, control of random access point placement, including across multiple presentation versions, dynamically updating presentation data, and/or efficiently presenting live content and time shifting.

Enhanced block-request streaming system using signaling or block creation

There is provided an information processing device including a display section configured to display a first object in a virtual three-dimensional space having a depth direction of a display screen, an operation section configured to acquire an operation for moving the first object in at least the depth direction, and a controller configured to move the first object on the display screen in accordance with the acquired operation, to execute, when a region of the first object overlaps a first overlap determination region, a first process to one or both of the first and second objects, and to execute, when the region of the first object overlaps a second overlap determination region, a second process to one or both of the first and second objects. The first overlap determination region may be a region obtained by extending the second overlap determination region in at least the depth direction.

Information processing device, information processing method, and program

Disclosed is a method for direct communication between stations. The method for direct communication between stations may include: receiving scheduling information on a frequency selective transmission (FST) from an access point; setting up a link for communication with another station based on the scheduling information; and communicating with the other station using the link.

Method for direct communication between stations in wireless local area system

A method of using channel information in a wireless LAN according to the present invention comprises the steps of: scanning, by each of multiple terminals, at least one access point existing nearby; transmitting, by each of the multiple terminals, a list of the at least one access point existing nearby to a target access point; transmitting, by the target access point, a beacon, wherein the beacon includes a flag for requesting information indicating a distance between at least one access point existing nearby each of the multiple terminals and the corresponding terminal; estimating, by the target access point, a location of each of the multiple terminals based on similarity between respective responses of the multiple terminals to the beacon; grouping the multiple terminals into at least one group based on the estimated locations; and allocating a single time slot to a single group.

Method of using chanel information in wireless lan

PURPOSE: A communications method in a multi-bandwidth supporting wireless local area network (LAN) system and an apparatus thereof are provided to transmit information of a receiving unit for determining a modulation mode, a code rate and a bandwidth and to determine a transmission rate in a transmitting unit using the information. CONSTITUTION: A receiving unit (1210) receives link margin information for each of multiple bandwidths from a receiving device of a multi-bandwidth supporting wireless LAN system. A control unit (1220) obtains a margin value of a signal-to-noise ratio based on the link margin information. The control unit determines a modulation and coding scheme (MCS) and a bandwidth based on the margin value of the signal-to-noise ratio. A transmitting unit (1230) transmits data to the receiving unit using determined MCS and bandwidth. [Reference numerals] (1210) Receiving unit; (1221) Condition information checking unit; (1223) Channel selecting unit; (1230) Transmitting unit

Communication method and communication apparatus using open loop ling in wireless lan system supporting multi bandwidth

A method for allocating resources in a wireless local area network (WLAN) system, and an apparatus thereof are disclosed. According to an embodiment of the present invention, a method for allocating resources may comprise the steps of: determining a restricted access bandwidth (RAB) section based on at least one bandwidth or one partial bandwidth among a plurality of bandwidths; and setting a restricted access window (RAW) in a time domain based on the RAB section. According to an embodiment of the present invention, by enabling the use of a variable frequency within a temporally grouped window in a WLAN system, transmission speed and performance can be improved without additional burden.

Method and apparatus for allocating resources in wireless lan system, communication method and communication terminal

Provided is a method and apparatus for receiving a signal for a MIMO system. The receiving apparatus includes: a QR decomposer for calculating a unitary matrix Q, an upper triangle matrix R, and a vector size for a received signal; a multiple dimension detector for calculating a first LLR for an output of the QR decomposer through multiple dimension detection; an inverse matrix and weight calculator for calculating an inverse matrix for the upper triangle matrix R and a weight; an interference remover for regenerating a symbol for a demodulated data stream using the fist LLR and removing interference from an output vector of the QR decomposer using the regenerated symbol; and a weight zero forcing unit for performing zero forcing on the interference removed output vector from the interference remover using the inverse matrix of the upper triangle matrix R and the weight and calculating a second LLR.

Minho Cheong

Papers

Method for direct communication between stations in wireless local area system

Method of using chanel information in wireless lan

Communication method and communication apparatus using open loop ling in wireless lan system supporting multi bandwidth

Method and apparatus for allocating resources in wireless lan system, communication method and communication terminal

Method and apparatus for receiving signal for mimo system