A computer-implemented method includes displaying, within a user interface in a digital media system, a media pane, and a project pane, displaying, within the media pane, a thumbnail group representing a media item, the thumbnail group comprising one or more thumbnails, enabling a user to select, from the thumbnail group, a segment of the media item, and enabling a user to transfer the selected segment to the project pane.

Select drag and drop operations on video thumbnails across clip boundaries

A wireless communication apparatus is capable of improving communication efficiency by reducing the amount of control information transmitted. A channel quality information extraction section extracts CQI's from a received signal. An allocation control section allocates subcarriers for every communication terminal apparatus and selects a modulation scheme in such a manner that required transmission rate is satisfied for each communication terminal apparatus based on required transmission rate information, etc. and CQI's for communication terminal apparatus of each user. A required subcarrier number determining section decides the number of subcarriers allocated to every communication terminal apparatus so as to satisfy the required transmission rate for each communication terminal apparatus. A required subcarrier number information generating section generates information for the number of subcarriers allocated to every communication terminal apparatus. A subcarrier allocation section allocates packet data to selected subcarriers. Modulating sections adaptively modulate packet data allocated to each subcarrier.

Wireless Communication Apparatus and Wireless Communication Method

A computer-implemented method can include displaying, within a user interface in a digital media system, a media pane, and a project pane, displaying, within the media pane, a thumbnail group representing a media item, the thumbnail group comprising one or more thumbnails, a thumbnail comprising a plurality of frames, enabling a user to select, from the thumbnail group, a frame of the media item, and upon detecting that the user has selected a frame, creating a group of frames, the group of frames including the selected frame and one or more adjacent frames.

Fast creation of video segments

A wireless transmit/receive unit (WTRU) and a dynamic spectrum management (DSM) engine are described. The WTRU includes a transceiver, a radio frequency (RF) spectrum sensing unit and a processing unit. The transceiver transmits over a wireless link. The RF spectrum sensing unit measures information indicative of usage of a spectrum by other devices. The processing unit detects a change in performance of the wireless link, controls the transceiver to transmit a notification to a DSM engine indicating that the change in the performance of the wireless link was detected on a condition that the processing unit detects the change in performance of the wireless link, and receives a sensing task request for the WTRU to measure the information indicative of the usage of the spectrum by other devices based on the notification transmitted to the DSM engine indicating that the change in the performance of the wireless link was detected.

Dynamic spectrum management

Described herein are methods, metrics and apparatus for bandwidth allocation for cognitive radio. Information that needs to be passed between different components of a dynamic spectrum management (DSM) system for dynamic bandwidth allocation along with the corresponding interfaces is identified. Methods and associated metrics for measuring network performance, evaluating channel sensing results and handling various bandwidth allocation scenarios are presented. Also provided is an admission control mechanism for quality of service support. Alternate channel monitoring maybe performed in the background so that when a new channel is needed, an alternate channel may be immediately allocated and service disruption to the DSM system is reduced. A channel may be dynamically assigned as the primary channel in multiple channel scenarios to support tasks such as transmission of acknowledgment frames. Hybrid mode devices that may access a television white space (TVWS) database and perform spectrum sensing are also described.

Method and apparatus for bandwidth allocation for cognitive radio networks

A radio communication system comprises: a radio receiver including an interference canceller configured to generate a replica of a received signal and remove an interference signal from the received signal, and a frequency offset estimator configured to estimate a carrier frequency offset between a carrier frequency of the interference signal and a carrier frequency of a desired signal included in the received signal; and a radio transmitter including a frequency controller configured to adjust a carrier frequency of a transmitted desired signal to the carrier frequency of the interference signal based on the carrier frequency offset received from the radio receiver.

Radio communication system, radio station, and radio communication method

A radio receiver is provided with a beam-width-variable antenna that receives a radio signal and is capable of changing the beam-width; an interference canceller for removing interference waves from the received radio signal and outputting an interference-wave-removed signal; a measuring device for measuring reception quality of the received signal based on the interference-wave-removed signal; and a beam-width controller for controlling the beam-width of the beam-width-variable antenna based on the reception quality from the measuring device

Radio receiver and receiving method for controlling the beam-width of an antenna

One aspect of the present invention relates to a controller for a radio station. The controller includes an information acquisition unit acquiring radio communication state information on another radio station different from the radio station via a connected backbone network, the radio communication state information including frequency information and waveform feature information, a waveform information extraction unit calculating a waveform feature based on the waveform feature information, the waveform feature indicating whether a received radio signal includes the radio signal transmitted from the other radio station, and a radio resource parameter determination unit determining whether signal transmission from the radio station is available and specify a radio resource to be used for the signal transmission based on the frequency information, the waveform feature information and/or the calculated waveform feature.

Controller and method for use in radio station in radio communication system

A signal frequency band detection device is disclosed that is able to separately handle plural co-existing signals, and able to separately detect frequency bands used for transmission of these co-existing signals. The signal frequency band detection device includes a signal decomposition unit that decomposes a received signal into plural signal components with frequency bands of the signal components at least partially overlapping each other; and a frequency band detection unit that, based on respective electrical powers of the signal components, detects the respective frequency bands of the signal components.

Signal frequency band detection device

A signal reception device is disclosed that is able to improve interference cancellation capabilities even when signals having different center frequencies exist on the same frequency band. The signal reception device includes an interference suppression unit to generate replicas of plural signals in the received signal and separate the signals by suppressing interference signals. The interference suppression unit includes a signal phase rotator to rotate phases of the signal candidates at preset respective rotational frequencies, the preset rotational frequencies being related to respective center frequencies of the signals in the received signal; a rotational frequency controller to set the preset rotational frequencies; and a replica generator to generate the replicas of the signals by using the phase-rotated signal candidates.

Koji Maeda

Papers

Radio communication system, radio station, and radio communication method

Radio receiver and receiving method for controlling the beam-width of an antenna

Controller and method for use in radio station in radio communication system

Signal frequency band detection device

Signal reception device, signal transmission device, radio communication system, and signal reception method