Abstract: A client device adaptively streams a 360-degree video. A first segment is displayed based on a first viewing direction at a first time, where the first viewing direction is associated with a first viewport. The client requests a first base buffer segment based on the first viewport. The first base buffer segment has a presentation time after the first segment. At a second time, the viewing direction changes to a second viewing direction associated with a second viewport. The client requests, prior to the presentation time, a first viewport buffer segment based on the second viewport, with the same presentation time. The client device displays a second segment at the presentation time, wherein the second segment is either the first viewport buffer segment or the first base buffer segment. The client provides reports on viewport switching latency and on the most-requested segments.

Abstract: A secondary content such as an advertisement may be inserted based on users' interests in 360 degree video streaming. Users may have different interests and may watch different areas within a 360 degree video. The information about area(s) of 360 degree scenes that users watch the most may be used to select an ad(s) relevant to their interests. One or more secondary content viewports may be defined within a 360 degree video frame. Secondary content viewport parameter(s) may be tracked. For example, statistics of the user's head orientation for some time leading to tile presentation of the ad(s) may be collected. Secondary content may be determined based on the tracked secondary content viewport parameters).

Abstract: Systems, methods, and instrumentalities are disclosed for managing a service quality for data consumption with a wireless transmit/receive unit (WTRU), comprising determining a cost associated with obtaining the data, determining an amount of unused data in a monthly data plan, determining a preference for a content type related to the data: determining an amount of congestion in a network over which the data will be received, determining a desired service quality value based upon the cost, unused data, preference, and network congestion, comparing the desired service quality value to a set of representations of the data, wherein each of the representations is associated with a different service quality (for example, each of the representations may have an associated bitrate, and wherein each bitrate may be associated with a different service quality), and requesting the data at a representation having a quality closest to the desired service quality value.

Abstract: Processing a 360-degree video content for video coding may include receiving the video content in a first geometry. The video content may include unaligned chroma and luma components associated with a first chroma sampling scheme. The unaligned chroma and luma components may be aligned to a sampling grid associated with a second chroma sampling scheme that has aligned chroma and luma components. A geometric conversion to the video content may be performed. The video content, that may comprise the aligned chroma and luma components, in the first geometry may be converted to a second geometry. The first geometry may be a stitched geometry, and the second geometry may be a coding geometry. The converted video content in the second geometry may include the chroma and luma components aligned to the sampling grid associated with the second chroma sampling scheme.

Abstract: Systems, methods, and instrumentalities are disclosed for client centric service quality control. A first viewport of a 360 degree video may be determined. The 360 degree video may comprise one or more of an equirectangular, a cube-map, a cylindrical, a pyramidal, and/or a spherical projection mapping. The first viewport may be associated with a spatial region of the 360 degree video. An adjacent area that extends around the spatial region may be determined. A second viewport of the 360 degree video may be determined. A bitstream associated with the 360 degree video may be received. One or more enhanced regions may be included in the bitstream. The one or more enhanced regions may correspond to the first and/or second viewport, A high coding bitrate may be associated with the first viewport and/or the second viewport.

Abstract: Apparatus, comprising a wireless transceiver to wirelessly communicate with multiple recipients, control logic coupled to the wireless transceiver to determine an amount of available bandwidth for multicasting multiple data streams for the recipients, the control logic to select an encoded data stream including data substreams relating to at least first and second video reference views and corresponding depth data for respective ones of the video reference views to transmit to a recipient via the wireless transceiver on the basis of the determined bandwidth.

Abstract: Apparatus, comprising a wireless transceiver to wirelessly communicate with multiple recipients, control logic coupled to the wireless transceiver to determine an amount of available bandwidth for multicasting multiple data streams for the recipients, the control logic to select an encoded data stream including data substreams relating to at least first and second video reference views and corresponding depth data for respective ones of the video reference views to transmit to a recipient via the wireless transceiver on the basis of the determined bandwidth.