Abstract: The disclosure relates to a collaborative demand-based dual-mode Wi-Fi network control framework that may optimize wireless power and performance on wireless devices that may support multiple Wi-Fi networking technologies. In particular, a high performance Wi-Fi link may be reserved to services or applications that have substantial quality of service (QoS) requirements and conventional Wi-Fi links may be utilized to transfer data for services or applications that have typical performance requirements. For example, bandwidth requirements associated with forward traffic may be measured according to sizes and latency requirements associated with the forward traffic and the appropriate Wi-Fi networking mode may be controlled according to the forward traffic bandwidth requirements in combination with the average bandwidth and average retransmission rate associated with the conventional Wi-Fi links, among other factors.

Abstract: Wireless communication devices are provided with direct video and audio streaming capability. The streaming capability may support overlays. Some implementations include incorporation of these features into devices with a mirroring display mode.

Abstract: Methods, systems, and devices are described for remote display of content in a wireless network. A source device capable of displaying content may identify one or more rendering instructions for content to be displayed remotely on a sink device. The source device may transmit the one or more rendering instructions to the sink device via a wireless peer-to-peer connection. The sink device may receive the one or more rendering instructions and may execute the one or more rendering instructions to render a display of at least part of the content. Further, the source device may receive data from the sink device via the wireless peer-to-peer connection. The identifying of the one or more rendering instructions by the source device may thus include identifying at least one rendering instruction based at least in part on the received data.

Abstract: Methods, systems, and devices are described for using a back channel for communicating in a Wi-Fi peer-to-peer remote display connection. A Wi-Fi peer-to-peer remote display connection may be established with a source device. Communications may be transmitted from a sink device to the source device using a back channel of the Wi-Fi peer-to-peer remote display connection. The sink device may connect with a plurality of source devices. A plurality of input streams may be multiplexed into a single output stream. The single output stream may be distributed to the plurality of source devices using back channels of the Wi-Fi peer-to-peer remote display connection. In addition, a source device may connect, via a wired connection, with a sink device. Wi-Fi connection parameters may be exchanged with the wired connection. A Wi-Fi peer-to-peer connection may be established based at least in part on the Wi-Fi connection parameters.

Abstract: Methods, devices, and computer program products for using raw bitstreams and lossless distributed source coded (DSC) video to optimize video performance in wireless dock with ultra-high definition displays. In one aspect, a method of transmitting a video stream from a transmitting device to a wireless video display is described. The method includes determining a resolution of the wireless video display and a native resolution of a video stream, as well as a connection speed between the transmitting device and the wireless video display. Based on this information, the method selects a video compression format, choosing between raw video, DSC video, and high-efficiency video coded video. The method further transmits the video stream in the selected video compression format from the transmitting device to the wireless video display.

Abstract: This disclosure describes techniques to improve a user experience in a Wireless Display (WD) system. The WD system includes a source device that provides media data to one or more sink devices. The techniques are directed toward reducing end-to-end latency in the WD system while improving video playback quality at the sink devices. More specifically, the techniques include customized playback at the sink devices based on the type of media data received from the source device. If the media data only includes video data and does not include audio data, a processing pipeline of the sink device is configured to render the video data without waiting to synchronize with non-existent audio data. If the media data includes both video data and audio data, an audio rendering start-up timer is reduced and the processing pipeline renders synchronized audio and video data according to the reduced start-up timer.

Abstract: Methods, systems, and devices are described for remote display of content in a wireless network. A source device capable of displaying content may identify one or more rendering instructions for content to be displayed remotely on a sink device. The source device may transmit the one or more rendering instructions to the sink device via a wireless peer-to-peer connection. The sink device may receive the one or more rendering instructions and may execute the one or more rendering instructions to render a display of at least part of the content. Further, the source device may receive data from the sink device via the wireless peer-to-peer connection. The identifying of the one or more rendering instructions by the source device may thus include identifying at least one rendering instruction based at least in part on the received data.

Abstract: As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user input data received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. The input data received at the wireless sink device can be a multi-touch gesture.

Abstract: An apparatus and method for session management and control procedures for supporting multiple groups of sink devices in a peer-to-peer wireless display system are described. One implementation may include an apparatus configured to transmit multimedia content to a plurality of sink devices. The apparatus may comprise a processor configured to connect to each of the sink devices with a Wi-Fi peer-to-peer connection. The processor may further be configured to receive capability information from each of the sink devices. The processor may further be configured to generate a control message including a group session ID and a transport port number. The processor may further be configured to determine a set of streaming parameters for the sink devices. The processor may further be configured to transmit, using the transport port number and according to the set of streaming parameters, the particular multimedia content to each of the Wi-Fi peer-to-peer connected sink devices.

Abstract: This disclosure describes techniques to improve a user experience in a Wireless Display (WD) system. The WD system includes a source device that provides media data to one or more sink devices. The techniques are directed toward reducing end-to-end latency in the WD system while improving video playback quality at the sink devices. More specifically, the techniques include customized buffering at the sink devices based on application awareness for the media data. The techniques include learning the type of application for the media data, and adjusting the size of buffers in the processing pipeline to achieve an appropriate balance between smoothness and latency for the application type. For example, when the media data is for a video playback application, the techniques include increasing the buffer size to increase smoothness in the video playback application.

Abstract: As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user inputs received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. As part of transmitting user input to the source device, the sink device can generate a data packet that identifies a user input category for the user input, and the source device can process the data packet based on the user input category.

Abstract: Methods, systems, and devices are described for using a back channel for communicating in a Wi-Fi peer-to-peer remote display connection. A Wi-Fi peer-to-peer remote display connection may be established with a source device. Communications may be transmitted from a sink device to the source device using a back channel of the Wi-Fi peer-to-peer remote display connection. The sink device may connect with a plurality of source devices. A plurality of input streams may be multiplexed into a single output stream. The single output stream may be distributed to the plurality of source devices using back channels of the Wi-Fi peer-to-peer remote display connection. In addition, a source device may connect, via a wired connection, with a sink device. Wi-Fi connection parameters may be exchanged with the wired connection. A Wi-Fi peer-to-peer connection may be established based at least in part on the Wi-Fi connection parameters.

Abstract: Wireless communication devices are provided with direct video and audio streaming capability. The streaming capability may support overlays, and seek functionality. Some implementations include incorporation of these features into devices with a mirroring display mode such as Miracast.

Abstract: This disclosure relates to techniques to establish a multicast communication session between a source device and multiple sink devices in a Wireless Display (WD) system. Two or more sink devices may be interested in receiving the same media data from the source device. According to the techniques, the source device establishes a multicast session with the sink devices in the WD system, and sends a single copy of multicast media data for the multicast session to the interested sink devices using a receiving multicast port. The source device selects a receiving multicast port number as a destination identifier for each multicast session. The sink devices interested in receiving the media data of a given multicast session bind on the receiving multicast port for the multicast session. This disclosure describes several exemplary multicast subscription procedures to ensure correct binding on the receiving multicast port at each of the sink devices.

Abstract: In embodiments, a one-to-one association is established between a client and a host in a wireless network, such as a wireless local area network or a wireless personal communication network. The client may be a display device. The host may be a cellular telephone. Active association corresponds to the host exclusively using a shared resource of the client. When the association is solid, requests from other hosts to establish an active association are denied. When the association is fragile, such requests are granted. In the case of a semi-solid association, a request from another host to establish an active association causes the client to generate a query to the host currently owning the active association. If the host currently owning the association grants a release, a new active association is established between the requesting host and the client. Otherwise, the request from the other host is denied.

Abstract: As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user inputs received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. As part of establishing the communication session, the wireless sink device and the wireless source device may perform capability negotiation.

Abstract: Aspects of this disclosure relate to a method that includes, in an example, sending, by a source device, display data to a sink device for rendering on the sink device. The method also includes receiving, by the source device, an indication of user input at a first display location of a touch-sensitive screen associated with the source device, wherein the user input specifies a modification of at least a portion of the display data rendered at the sink device, wherein the portion of the display data is rendered at a second display location of the sink device. The method also includes, in response to receiving the indication, sending, by the source device, second configuration data to modify the portion of the display data rendered at the second display location based at least in part on a mapping of the first display location to the second display location.

Abstract: Techniques of this disclosure are generally directed to a method of transmitting content of a first wireless computing device to a second wireless computing device. A first wireless computing device may initiate a WI-FI display (WFD) connection, transmit data from the first wireless computing device via the WFD connection to the second wireless computing device, execute a media sharing application that enables the first wireless computing device to share a media item of a playlist with a wireless client computing device, transmit information that describes the media item of the playlist to the wireless client computing device, wherein transmitting the information that describes the media item causes the second wireless computing device to determine if the wireless client computing device is capable of outputting the media item, and transmit the media item to the wireless client computing device.

Abstract: A sink device in a Wireless Display (WD) system may send performance information feedback to a source device to adjust media data processing at the source device. The performance information feedback may include performance indicators of the WD system that are capable of being measured or calculated at the sink device based on received media data or request to adjust the transmission of media data. For example, the performance information feedback may include one or more of round trip delay, delay jitter, packet loss ratio, error distribution, and received signal strength indication (RSSI). The feedback channel may be piggybacked on a reverse channel architecture referred to as the User Input Back Channel (UIBC) implemented between the source device and the sink device.

Abstract: This disclosure relates to techniques to establish a multicast communication session between a source device and multiple sink devices in a Wireless Display (WD) system. Two or more sink devices may be interested in receiving the same media data from the source device. According to the techniques, the source device establishes a multicast session with the sink devices in the WD system, and sends a single copy of multicast media data for the multicast session to the interested sink devices using a receiving multicast port. The source device selects a receiving multicast port number as a destination identifier for each multicast session. The sink devices interested in receiving the media data of a given multicast session bind on the receiving multicast port for the multicast session. This disclosure describes several exemplary multicast subscription procedures to ensure correct binding on the receiving multicast port at each of the sink devices.