Abstract: Disclosed are a device and method in a wireless communication system. The device comprises: a first generating unit configured to generate a first pre-coding matrix according to first channel information on a channel between a first communication apparatus and a second communication apparatus; a second generating unit configured to generate a second pre-coding matrix according to the first pre-coding matrix and second channel information on the channel; and a pre-coding unit configured to pre-code a data signal according to the first pre-coding matrix and the second pre-coding matrix. According to the embodiments of the present invention, interference between user equipment can be effectively removed, the operation complexity is reduced, and the whole performance of the system is optimized.

Abstract: Media can be automatically controlled. A media control service can be configured to detect changes in the active application on a computing device and, in response, mute, pause or otherwise control the audio of one or more non-active applications to thereby prevent overlapping of audio. The media control service may leverage a policy to customize such control for a particular user, use case or other scenario. The media control service may also leverage machine learning to adapt such control based on a user's interactions with the computing device.

Abstract: Disclosed herein is an image monitoring system including: a camera connected to a network; display means for displaying an image captured by the camera; and display control means for controlling display such that, in displaying images by the display means, an image is displayed in a window having a predetermined layout; wherein the display control means presets an allocation database containing a correlation between the window having a predetermined layout and a camera identification code and, when the camera is connected to the network, automatically sets a correlation between the camera identification code in the allocation database and the camera, thereby controlling image display into the window on the basis of the allocation database.

Abstract: The present invention relates to an on-site audio center system based on an Audio over Internet protocol (AoIP), capable of efficiently transmitting audio by connecting a plurality of audio input devices to a plurality of audio output devices in a one-to-one manner through audio transmitting modules and audio receiving modules, so that an AoIP network is easily configured through a control personal computer (PC).

Abstract: A mobile wallet for storing a digital asset, the mobile wallet may include a communication unit; a programmable logic device (PLD), a main controller, a secure element, and an anti-tamper unit that comprises one or more anti-tamper sensors. The secure element may be configured to store the digital asset. The communication unit may be configured to receive ingress traffic from outside the mobile wallet and to output egress traffic not blocked by the PLD. The PLD may be configured to monitor ingress traffic and egress traffic, and to determine whether to pass or block ingress messages of the ingress traffic and egress messages of the egress traffic. At least one of the main controller and the anti-tamper unit may be configured to detect a tamper attempt based on outputs of the one or more anti-tamper sensors. The main controller may be configured to assist in responding to a detected tamper attempt.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes transmitting, from a first access point of a plurality of access points, an announcement frame for performing a beamforming procedure for a distributed transmission. The distributed transmission includes a transmission from the plurality of access points. The announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point. The method further includes transmitting a packet for measuring a channel. The method further includes receiving feedback information from the user terminal based on the packet for measuring the channel.

Abstract: A method includes receiving, at an audio encoder, multiple streams of audio data. The method includes assigning a priority to each stream of the multiple streams and determining, based on the priority of each stream of the multiple streams, a permutation sequence for encoding of the multiple streams. The method also includes encoding at least a portion of each stream of the multiple streams according to the permutation sequence.

Abstract: Various aspects are described herein. In some aspects, the disclosure provides a method for a system-on-chip (SoC) including one or more computing cores. The method includes providing a scheduler to schedule running of threads on the one or more computing cores in a pre-boot environment including a core thread configured to provide a plurality of services. The method further includes providing, by the scheduler, a first lock for the core thread. The method further includes initializing, by the core thread, one or more additional services separate from the plurality of services. The method further includes selectively allowing access to the plurality of services of the core thread to one or more additional threads based on a status of the first lock. The method further includes allowing access to the one or more additional services to the one or more additional threads independent of the status of the first lock.

Abstract: An information processing apparatus includes a memory, and a processor coupled to the memory and configured to specify a first signal level of a first voice signal, specify a second signal level of a second voice signal, and execute evaluation of at least one of the first voice signal and the second voice signal based on at least one of a sum of the first signal level and the second signal level and an average of the first signal level and the second signal level.

Abstract: A transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

Abstract: There is provided a method and corresponding device for enabling channel state feedback for multi-user transmission in a wireless communication system. The method comprises performing (S1), for each of a number of users, a classification of the user into one of at least two groups based on a measure of the speed of the temporal channel variation for the user. The method also comprises selecting (S2), for each of the users, a channel state feedback mechanism based on the classification.

Abstract: User interfaces are displayed for providing accessory selection options for video conferencing endpoint devices of a video conferencing endpoint. A determination of available input and output accessories for the endpoint is made and the options are presented simultaneously with one another via one or more of the user interfaces. Each respective accessory, along with informative metadata and performance indicators, is displayed for selection by a user for use with the endpoint.

Abstract: One embodiment of the present invention sets forth a technique for transmitting data in a listen before talk (LBT) wireless transmission regime. A digital radio receiver is configured to simultaneously receive and decode digital data transmissions from multiple radio channels. A digital radio transmitter is configured to listen to the multiple radio channels prior to transmitting digital data on a selected one of the multiple channels, based on locally determined channel occupancy. Optimal LBT efficiency is achieved within the set of multiple channels, thereby improving overall transmission efficiency between the transmitter and the receiver.

Abstract: A system and method for providing dynamic quality-of-service (QoS) for Push-to-Talk (PTT) services in a wireless communications network. One or more servers interface to the wireless communications network to perform the PTT services for mobile units therein. Both the servers and the mobile units communicate with each other using control messages transmitted across bearers in the wireless communications network, and at least one of the servers transmits media streams comprised of voice messages for the PTT services between the mobile units across the bearers in the wireless communications network. At least one of the servers sets up a dedicated bearer in the wireless communications network for at least one of the mobile units, wherein the dedicated bearer has a specified quality of service (QoS) for transmission of at least the media streams to the mobile unit. The dedicated bearer may be static or dynamic.

Abstract: Systems and methods are provided for dynamic configuration of a digital conference call among customer premise equipment (CPE) such that CPEs that are determined to be located on a same local network connect via a peer-to-peer connection and CPEs that are determined to not be located on the same local network connect via a client-server connection.

Abstract: A transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

Abstract: New wireless networks can perform enhanced beamforming training for a multiple access technique, such as orthogonal frequency division multiple-access (OFDMA). The configurations of the stations and the networks presented herein provide a multiple-station beam refinement protocol (MSBRP) that may be used to train the transmit end and/or the receive end for the stations in a dense wireless local area network (WLAN). The MSBRP can have at least two phases. The first phase concurrently trains the receive side of multiple responder stations from one set of training signals sent from an initiator station. Then, each responder station can send training signals to the initiator station in a set of ordered phases associated with each responder station. The MSBRP eliminates inefficiencies associated with conducting multiple BRPs that include only pairs of stations.

Abstract: According to one embodiment, a wireless communication device includes: a transmitter configured to transmit a first frame, the first frame being a frame for channel estimation; a receiver configured to receive a second frame, the second frame including channel information; and controlling circuitry. The transmitter is configured to transmit a third frame by beamforming based on the channel information. The controlling circuitry is configured to measure a communication quality of a channel based on a response frame to the third frame and control a transmission timing of the first frame based on the communication quality and a transmission rate of the third frame.

Abstract: The present application details methods and systems for facilitating within a network-based communication system, a communication session between a group of network devices. For example, the network device receives incoming data streams from other network devices in the communication session. The network device also sends an outgoing data stream to the other network devices in the communication session. Further, the network device combines the incoming data stream with the outgoing data stream and presents the combined data stream to a user.

Abstract: A transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

Abstract: A process and system provides a high efficiency (HE) sounding procedure that enables a beamformer to signal to each beamformee support for responses allowing other forms of feedback from the beamformee instead of explicit feedback. The HE sounding procedure utilizes additional fields in the frames of the HE sounding procedure to signal the use of the HE sounding procedure. The HE sounding procedure also supports legacy stations that provide standard explicit feedback.

Abstract: A device detects objects touching a first object icon representing a folder on a touch sensitive display and then moving in generally opposing directions, where the folder includes a plurality of constituent elements. In response to the detecting, additional object icons are rendered to display on the touch sensitive display, each additional object icon representing a respective constituent element, where the additional object icons are rendered in a pattern around the first object icon. The pattern of the additional object icons is animated.

Abstract: A wireless communication device comprises a wireless communication interface, a processing system, and a user interface. The wireless communication interface is configured to wirelessly receive a mixed media signal comprising a plurality of audio streams originating from different source devices. The processing system is configured to isolate the audio streams and generate graphical representations of each one of the audio streams. The user interface is configured to display the graphical representations of each one of the audio streams and receive audio stream modification instructions from a user. The processing system is configured to process the audio stream modification instructions to generate at least one modified audio stream based on the audio stream modification instructions. The user interface is configured to display a graphical representation of the modified audio stream and audibly output a modified mixed media signal comprising the modified audio stream.

Abstract: A computer-implemented method and system allows a remote computer user to listen to teams in a race event. The method includes receiving audio signals from a plurality of audio sources at the race event; transmitting at least some of the audio signals to a remote computer; and filtering the audio signals as a function of the source of at least some of the audio signals so that at least some of the audio signals are not played by the remote computer and heard by the user.

Abstract: To be able to change settings for selective changing control of a program as a target for sound input/output flexibly. A background music (BGM) sound selection managing section obtains priority values set to a plurality of programs, respectively. The BGM sound selection managing section performs control such that a program selected from among the plurality of programs on a basis of the obtained priority values becomes a target for selective sound input/output from/to an outside.

Abstract: A method for conducting a video conference, said method comprising: visualizing representations of a plurality of conference participants on a display of a terminal; detecting a gazing direction of a user of said terminal; determining a first observation relationship between said user and a first one of said conference participants (U1), said first one of said conference participants (U1) being identified by correlating said detected gazing direction with a presently observed one of said visualized representations; and visually differentiating said representation of said first one of said conference participants (U1).

Abstract: The method according to embodiments of the present invention includes: allocating, by a management platform, a first multipoint control server to a first conference according to conference information of the first conference carried in a call from any site, where the conference information of the first conference includes a conference access number of the first conference and a site number included in the first conference, and the site number included in the first conference includes a conference access number of a second conference; and allocating, by the management platform, a second multipoint control server to the second conference according to conference information of the second conference carried in a call from the first multipoint control server, and establishing a cascading channel between the first multipoint control server and the second multipoint control server.

Abstract: A network appliance (100) is provided having a network controller subsystem (110) for coupling the appliance (100) to a data network for providing and receiving data packets to and from a packet data network. A digital signal processing subsystem (120) is coupled to the network controller subsystem (110). A signal conversion subsystem (130) is coupled to the digital signal processing subsystem (120) and a user interface subsystem (160) is coupled to both the signal conversion subsystem (130) and the digital signal processing subsystem (120). The digital signal processing subsystem (120) operates under the control of a computer program which is capable of detecting incoming calls, initiating call sessions, and preferably, implementing advanced telephony features.

Abstract: A computer-implemented method and system allows a remote computer user to listen to teams in a race event. The method includes receiving audio signals from a plurality of audio sources at the race event; transmitting at least some of the audio signals to a remote computer; and filtering the audio signals as a function of the source of at least some of the audio signals so that at least some of the audio signals are not played by the remote computer and heard by the user.

Abstract: A virtual meeting place system is disclosed. The online virtual meeting place facilitates initiating, scheduling, or spontaneously organizing an online discussion or meeting, organizing the discussion into active and passive participants, limiting or eliminate participation of selected participants and soliciting, receiving and answering questions. The system is configurable to allow for customization based upon the social protocols or preferences of meeting participants and may present different user interfaces based upon participant identity, meeting topic or meeting format.

Abstract: Communication operations are optimally conducted by applying space-division multiple access in which wireless resources on a spatial axis are shared among a plurality of users. By applying an RD protocol to a communication system that conducts space-division multiple access, spatially multiplexed frames in a TXOP are made more efficient. By specifying a frame length for reverse direction frames with reverse direction permission information and having respective transmitters of reverse direction frames make their frame lengths uniform while respecting the specification, AGC operation stabilizes. Also, a transmit start time for reverse direction frames can be specified by reverse direction permission information, and respective transmitters of reverse direction frames can transmit frames at the same time while respecting the specification.

Abstract: An adaptive router anticipates possible future congestion and enables selection of an alternative route before the congestion occurs, thereby avoiding the congestion. The adaptive router may use a primary route until it predicts congestion will occur. The adaptive router measures packet traffic volume, such as flit volume, on a primary network interface to anticipate the congestion. The adaptive router maintains a trailing sum of the number of flits handled by the primary network interface over a trailing time period. If the sum exceeds a threshold value, the adaptive router assumes the route will become congested, and the adaptive router enables considering routing future packets, or at least the current packet, over possible secondary routes.

Abstract: Embodiments described by the present disclosure provide improved systems and methods for determining the location of a mobile device. In one embodiment, a system comprises a distributed antenna system (DAS) configured to relay signals to and from the mobile device. Further, the DAS comprises a hub unit; and multiple remote antenna units coupled to the hub unit, wherein signals relayed between the remote antenna units and the hub unit are delayed such that different signal paths between the remote antenna units and the hub unit have different delay times. The system also comprises a base station coupled to the hub unit, wherein the base station receives the signals from the hub unit and determines the delay of signals transmitted between the mobile device and the base station, wherein the system determines the location of the mobile device by using the delay for RF pattern matching.

Abstract: The teachings presented herein propose a separation between the configuration of a sounding signal, and the initialization of the sounding signal. In other words, in at least one example embodiment proposed herein, a base station or other controlling entity separates the selection of sounding signal parameters (sounding signal configuration) and the signaling of that configuration information to a mobile terminal from the Ordering” or other initiation of sounding signal transmission. Thus, a mobile station may be sent sounding signal configuration information and subsequently be commanded (implicitly or explicitly) to begin sounding signal transmissions according to the previously provided configuration information.

Abstract: A method for managing virtual talk groups includes facilitating communications from a plurality of endpoints via an interoperability system. The plurality of endpoints comprises endpoints of different communication networks. The method includes configuring a virtual talk group comprising a first group of the plurality of endpoints and assigning to at least one endpoint of the first group of the plurality of endpoints of the virtual talk group functionality with respect to the interoperability system based on a relative priority of the at least one endpoint to other endpoints of the first group of the plurality of endpoints.

Abstract: An electronic communication system including at least one first communication unit and one second communication unit which are connected to one another by means of at least one first data line. The communication system has a data transmission protocol according to which, in at least one first data transmission mode for synchronized data transmission, the first communication unit transmits a data request signal or a clock signal to the second communication unit via the first data line at least once and the second communication unit transmits a data signal to the first communication unit via the first data line in response to the data request signal or the clock signal.

Abstract: Provided are a multicarrier based communication method and device. A mobile station activates a first carrier, and activates a second carrier adjacent to the first carrier. Defined within the first carrier there is a first frame comprising a legacy UL (uplink) region and an AAI (Advanced Air Interface) UL region; defined within the second carrier there is a second frame comprising an AAI UL region in the first frame occupy frequencies that differ from each other; and guard subcarriers between the AAI UL region of the first frame and the AAI UL region of the second frame are not used for data transmission.

Abstract: The disclosure relates to controlling uplink transmissions according to closed loop techniques such as closed loop uplink transmit diversity and uplink multiple-input multiple-output (MIMO). An exemplary method for use in a user equipment (61) configured for multi-antenna transmissions comprises a step of receiving (62), in a downlink channel, pre-coding vector information indicating a pre-coding vector for uplink transmission. The method further comprises a step of determining (63) whether the pre-coding vector indicated by the received pre-coding vector information is reliable or unreliable and steps of applying (64) the pre-coding vector indicated by the received pre-coding vector information for uplink transmission only if the pre-coding vector is determined to be reliable and applying (66) a pre-determined pre-coding vector when the pre-coding vector indicated by the received pre-coding vector information is determined to be unreliable.

Abstract: To enable internet softphone users to join to calls hosted at an audio conferencing bridge, a SIP Invite may be received at a bridge interface layer of an audio conferencing system. Parameters of the SIP Invite may be extracted, e.g. from one or more X-header fields and processed to enable the internet softphone to be joined to an audio conferencing bridge. The bridge interface layer may receive a SIP Refer message from the audio conferencing bridge that indicates a second audio conferencing bridge external to the system. The bridge interface layer may forward the SIP Invite to the second audio conferencing bridge and the RTP media may be established through the session border controller (SBC) of the audio conferencing system.

Abstract: A first wireless device including a receiver and a transmitter. The receiver includes a channel estimation module configured to receive, from a second wireless device over a communication channel, a training packet and estimate a quality of the communication channel based on the training packet, and a modulation and coding scheme (MCS) determination module configured to determine an MCS based on one or more of the training packet and the estimated quality of the communication channel. The transmitter is configured to transmit, to the second wireless device over the communication channel, an indication of the MCS determined by the MCS determination module.

Abstract: Systems, devices, and techniques for MIMO (Multiple-In-Multiple-Out) based space-frequency coding can include, in at least some implementations, techniques that include selecting a spatial multiplexing rate M for a transmission of data via two or more antennas, the data comprising N data streams, applying a first mapping to map the N data streams to a first portion of the antennas for a first data tone; and applying a different second mapping to map the N data streams to a different second portion of the antennas for a second data tone.

Abstract: A communication method of coordinated multi-point transmission systems. Based on the Zadoff-Chu sequences, multiple training sequences are implemented, and the training sequences are a set of robust orthogonal training sequence (ROTS). Preamble signals that use the set of training sequences can be transmitted from multiple base stations/relay stations at the same time. In the case with the mixture signal of multiple preamble signals, user equipment can still use the received signal to estimate multiple carrier frequency offsets of the corresponding base stations/relay stations.

Abstract: The illustrative embodiments described herein provide improved systems and methods for conferencing enterprise and non-enterprise callers. In one embodiment, a method includes receiving a first call initiated by an enterprise caller at an enterprise, communicating with an enterprise media server to initiate a tributary conference on the enterprise media server, joining the enterprise caller to the tributary conference such that the enterprise caller is in data communication with the tributary conference, receiving a second call initiated by a non-enterprise caller via a public switched telephone network, interfacing the non-enterprise caller with a data center media server, creating a home conference on the data center media center, joining the second call to the home conference, and interfacing the home conference on the data center media server to the tributary conference on the enterprise media server to form a linked conference between the enterprise caller and the non-enterprise caller.

Abstract: The present invention discloses a solution for performing a sharing an ongoing data session between a first user and a group of at least one additional user in a telecommunication system. The basic idea of this invention is to provide a network integration node with a shared streaming session logic, replication logic and group membership management functions of a conference node, like for example the “Push to-talk over Cellular (PoC)” application. Using this functionality the conference system is to be included into the ongoing streaming session, shall invite additional members and forward the streaming traffic to them as well. This results into a shared streaming service using unicast communication resources.

Abstract: Systems and methods are provided for determining a channel quality indicator (CQI) in a transmission system associated with a diversity transmission scheme. A plurality of independent diversity branches are identified in the diversity transmission scheme. Each one of the independent diversity branches may correspond to a different portion of the effective channel and may include any suitable combination of frequency, time, and/or spatial components of the effective channel or of any wired or wireless paths or combinations of the same. An effective Signal-to-Noise Ratio (SNR) value is computed for each one of the identified independent diversity branches. The computed effective SNR values are combined for the identified independent diversity branches to generate a CQI value.

Abstract: A method includes determining parameters corresponding to a communication channel, transmitting the parameters from a first wireless device to a second wireless device via the communication channel, wherein the parameters include at least one of (i) an estimated quality of the communication channel or (ii) a modulation and coding scheme (MCS) for transmission via the communication channel, receiving the parameters at the second wireless device, and based on at least one of the parameters, selecting a MCS for transmission from the second wireless device to the first wireless device via the communication channel.

Abstract: In one aspect, audio streams are added to a mix until the mix is either complete (i.e., all audio streams have been added) or the mix is closed early (i.e., before the mix is complete). In another aspect, audio and video streams are synchronized by playing back the audio stream and then synchronizing display of the video frames to the playback of the audio stream.

Abstract: A method of automatically establishing an input language for a handheld electronic device includes receiving a request to initiate the composition of a new message, receiving a selection of a particular contact that is the intended recipient of the message, and determining whether the particular contact has a stored preferred input language. If a preferred input language is stored, the method includes determining whether the preferred input language is different than the current input language (which may be a pre-established default input language). If the preferred input language is different, the method further includes switching the current input language to the preferred input language. Also provided is an improved handheld electronic device having one or more routines adapted to implement the method. Also provided is a method of indicating a preferred language in association with a call received by or placed to the device.

Abstract: An embodiment of the invention provides a wireless communication system for carrying out a spatial multiplexing communication between a transmitter, and a receiver, the system including: a channel information matrix acquiring section for acquiring a channel information matrix; a weighting factor matrix arithmetically operating section for obtaining a weighting factor matrix based on the channel information matrix thus acquired; a normalizing section for executing processing for normalizing the weighting factor matrix; a detecting section for detecting whether there is presence or absence of an abnormality in the processing; a weighting processing section for executing weighting processing based on the weighting factor matrix for each of transmission signals transmitted from the transmitter in accordance with a detection result obtained from the detecting section; and a transmitting section for transmitting the transmission signals for which the weighting processing section executes the weighting processing fr

Abstract: A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets, and a subset of antennas is selected according to the channel matrix.