摘要:
Embodiments of techniques and systems for quality of experience (QoE) reporting in wireless systems are described. In some embodiments, user equipment may receive a first value of a first quality of experience (QoE) metric computed during playout of a multimedia asset at the user equipment. The first value may be received at a first layer in a protocol stack of the user equipment from a second layer above the first layer in the protocol stack. The user equipment may provide a first layer report, including data representative of the first value, for wireless transmission from the user equipment to an eNB. Other embodiments may be described and claimed.
摘要:
Technology for adapting a video stream using a quality of experience (QoE) report is disclosed. One method can include a QoE-aware system in a node of a radio access network (RAN) receiving a QoE report with at least one QoE metric from a wireless device. The QoE-aware system can extract the at least one QoE metric in a function layer from a QoE reporting layer. The function layer can be a layer other than the QoE reporting layer. The QoE-aware system can modify a layer function in the function layer to improve the QoE metric.
摘要:
A method for switching from a multimedia broadcast multicast services (MBMS) download to a hypertext transfer protocol (HTTP)-based delivery of dynamic adaptive streaming over HTTP (DASH) formatted content in an interne protocol (IP) multimedia subsystem (IMS) network is disclosed. The method can include a service control function (SCF) module receiving a session initiation protocol (SIP) re-invitation from a mobile device while the mobile device is receiving a MBMS download in a content delivery session including DASH formatted content. The SCF module can send a SIP invitation to an HTTP/SIP adapter to select an HTTP server for an HTTP-based delivery. The SCF module can receive a SIP acknowledgement from the HTTP/SIP adapter indicating a selection of the HTTP server for the content delivery session. The SCF module can forward the SIP acknowledgement to the mobile device indicating a switch to the HTTP server for the content delivery session.
摘要:
Parameters for encoding of a source are selected to minimize distortion between the source and a reconstructed source induced by transmission of the source over a multiple input multiple output (MIMO) channel.
摘要:
A method for switching from a unicast based delivery to an evolved multimedia broadcast multicast services (eMBMS) based delivery of dynamic adaptive streaming over hyper-text transfer protocol (HTTP) (DASH) formatted content. The method can include inserting dedicated stream access points (SAPs) in media for switching between the unicast and eMBMS-based content delivery. The use of SAPs enables a DASH client to be able to seamlessly switch between unicast and broadcast delivery modes.
摘要:
Retransmission techniques are disclosed. These techniques may be used in networks employing contention-based access schemes, such as CSMA. For instance, a device may receive a corrupted packet from a transmitting device, and determine a cause of the corruption. When the determined cause of the corruption is an in-network packet collision, the device allows the transmitting device to send a retransmission of the packet in accordance with a contention-based access scheme. However, when the determined cause of the corruption is other than an in-network packet collision, the device provides retransmission assistance to the transmitting device. This retransmission assistance may include a channel reservation for a retransmission, and/or one or more link adaptation suggestions for the transmitting device.
摘要:
Precoding parameters used for precoding of a source are selected to minimize distortion that would otherwise be induced in the source during encoding and transmission of the source over a multiple input multiple output (MIMO) channel.
摘要:
Disclosed in some examples is a method performed by a relay station, the method including receiving at a relay station a data packet transmitted from a base station to a subscriber station; receiving a non-acknowledgement (NACK) message transmitted from the subscriber station to the base station in response to the data packet; receiving resource allocation information transmitted from the base station to the subscriber station; and transmitting, in response to the received NACK message at the transmission time, the data packet to the subscriber station in a resource allocation allocated for a retransmission of the data packet from the base station to the subscriber station, wherein the resource allocation is determined from the resource allocation information.
摘要:
A method and device are described for determining at a node in a mesh network, cooperation with other nodes in forwarding messages and packets in a mesh network.
摘要:
Embodiments herein may operate at a cooperating relay station (CRS) in a wireless packet-carrying network (WPCN). A source-to-CRS (SC) link quality of an SC wireless channel may be estimated using signal quality information derived from a packet transmitted by a source station and received by the CRS. A CRS-to-destination (CD) link quality of a CD wireless channel may also be estimated using signal quality information derived from a packet transmitted by a destination station and received by the CRS. A source-to-destination (SD) link quality parameter representing SD link quality may be extracted by the CRS from the packet transmitted by the destination station. The CRS may decide whether to participate with the source station or with another CRS in transmitting an SD packet based upon the SC link quality, the CD link quality, the SD link quality, or a combination thereof. Other embodiments may be described and claimed.