Vid Scale, Inc.

Interdigital Patent Holdings, Inc.

Celeno Communications (israel) Ltd.

Avi Rapaport

Liangping Ma

Samian Kaur

Weimin Liu

Gregory S Sternberg

Yuriy Reznik

Ariela Zeira

Stephen E Terry

Anantharaman Balasubramanian

Kamel M Shaheen

James M Miller

Ravikumar V Pragada

Dimitrios Karampatsis

Edward L Hepler

Eduardo Asbun

Zhifeng Chen

Gregory Lerner

Zhuorong Deng

Naresh H Soni

Eun Ryu

Shahar Hauzner

Chris Wallace

Systems, methods, and instrumentalities are disclosed to perform rate adaptation in a wireless transmit/receive unit (WTRU). The WTRU may receive an encoded data stream, which may be encoded according to a Dynamic Adaptive HTTP Streaming (DASH) standard. The WTRU may request and/or receive the data stream from a content server. The WTRU may monitor and/or receive a cross-layer parameter, such as a physical layer parameter, a RRC layer parameter, and/or a MAC layer parameter (e.g., a CQI, a PRB allocation, a MRM, or the like). The WTRU may perform rate adaption based on the cross-layer parameter. For example, the WTRU may set the CE bit of an Explicit Congestion Notification (ECN) field based on the cross-layer parameter. The WTRU may determine to request the data stream encoded at a different rate based on the cross-layer parameter, the CE bit, and/or a prediction based on the cross-layer parameter.

Rate adaptation using network signaling

A wireless transmitter includes a radio interface and transmitter circuitry. The radio interface includes multiple transmit antennas. The transmitter circuitry is configured to hold multiple steering matrices specifying weights to be applied to one or more spatial streams transmitted via the multiple transmit antennas to a receiver that includes one or more receive antennas, the multiple steering matrices are specified over multiple sub-carriers, to calculate smoothed weights, by applying to the weights of the steering matrices phase-only corrections that reduce phase variations among the weights of the steering matrices over the sub-carriers, and to transmit to the receiver beam-formed transmissions of the one or more spatial streams over the sub-carriers, by applying to the spatial streams the smoothed weights in the respective sub-carriers.

Smoothing beamforming matrices across sub-carriers

HARQ parameters (e.g., maximum HARQ retransmission values) may be adapted. Cross-layer control and/or logical channel control may be used to select a maximum number of HARQ retransmissions, for example based on packet priority and/or QCI values. Respective priorities of video packets may be used to select one of a plurality of logical channels associated with a video application that may be established at a source wireless hop and/or a destination wireless hop. The logical channels have different HARQ characteristics. Different maximum HARQ retransmission values may be determined for select logical channels, for example such that packets of different priorities may be transmitted over different logical channels. One or more of the channels may be associated with one or more transmission queues that may have different priority designations. Video packets may be reordered (e.g., with respect to transmission order) within the transmission queues, for example in accordance with respective HARQ parameters.

Method and apparatus for video aware hybrid automatic repeat request

Methods, apparatuses and systems for performing hierarchical traffic differentiation and/or employing hierarchical traffic differentiation are provided. These methods, apparatuses and systems may be implemented to, for example, handle congestion and/or to manage user quality of experience (QoE). Performing the hierarchical traffic differentiation may include differentiating or otherwise classifying (collectively 'differentiating') traffic mapped to, or within, a bearer formed in accordance with a QoS class into multiple traffic sub-classes. Employing the hierarchical traffic differentiation may include scheduling and/or policing (e.g., filtering) the differentiated traffic for transmission based on a prioritization of, and/or policy for managing, the multiple traffic sub-classes.

Hierarchical traffic differentiation to handle congestion and/or manage user quality of experience

Embodiments contemplate devices and techniques for receiving unicast and multicast transmissions over a downlink (DL) shared channel in parallel, for example an LTE DL shared channel (SCH). For example, one or more hybrid automatic repeat request (HARQ) entities may be configured to perform retransmissions of the multicast and/or unicast messages. Common and/or dedicated (e.g., separate) HARQ entities may be utilized for retransmission. The multicast downlink shared channels may be activated and/or deactivated on demand. The activation and/or deactivation may be performed using radio resource control (RRC) signaling and/or Medium Access Control (MAC) signaling. The multicast and/or unicast downlink shared channel data may include scalable video coding (SVC) data of varying priority. Embodiments also contemplate the use of simultaneous (e.g. parallel) multicast/unicast for scalable video coding transmission over WiFi/802.11 protocol signals.

Scalable video coding over simultaneous unicast/multicast LTE DL shared channel

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Shoham, Israel

Avi Rapaport