Abstract: The invention relates to a method for controlling feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity. In one embodiment of the invention the terminals may decide whether to provide feedback based on a probabilistic experiment performed based on parameters determined and provided by the feedback control entity.

Abstract: The invention relates to a method for controlling feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity. In one embodiment of the invention the terminals may decide whether to provide feedback based on a probabilistic experiment performed based on parameters determined and provided by the feedback control entity.

Abstract: The invention relates to a method for controlling feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity. In one embodiment of the invention the terminals may decide whether to provide feedback based on a probabilistic experiment performed based on parameters determined and provided by the feedback control entity.

Abstract: The invention relates to a method for controlling feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity. In one embodiment of the invention the terminals may decide whether to provide feedback based on a probabilistic experiment performed based on parameters determined and provided by the feedback control entity.

Abstract: The invention relates to a method for controlling the transmission of feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a communication system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity.

Abstract: The invention relates to a method for controlling the transmission of feedback of mobile terminals receiving via an air interface of a mobile communication system a multicast or broadcast service transmitted or forwarded by a feedback control entity and to a mobile terminal, the feedback control entity using this method. Further, a communication system comprising a feedback control entity and a mobile terminal receiving a multicast or broadcast service is provided. To enable configurable and adaptive feedback for multicast or broadcast services provided via an air interface maintaining the end-to-end session concept the invention suggests selecting a subset of the mobile terminals of the mobile communication system and which receive the multicast or broadcast service for providing feedback to a feedback control entity.

Abstract: The invention relates to a method for providing RTCP feedback messages for data packets of at least one streaming session from a client to a streaming server, wherein the at least one streaming session is provided using a RTP protocol and the RTCP protocol. Further, a RTCP bandwidth, being a fraction of the available streaming session bandwidth, is allocated to the RTCP feedback messages. Moreover the invention further relates to a client in a mobile communication system performing the method. The invention specifies methods for optimizing RTCP feedback in a unicast sessions, in order to guarantee a maximum number of retransmissions with the available client buffering time and to allow for a desired level of redundant reporting on lost packets if possible.

Abstract: A method of exchanging signalling information for optimising a rate control scheme in a mobile network, wherein data packets are transmitted over the network from a sender to a receiver employing the rate control scheme with a sending rate which can be adapted using feedback information from the receiver, comprising the step of exchanging PDP context information between the receiver and the network, signalling PDP context information to the sender; and adapting the sending rate using the signal PDP context information. The invention further relates to a corresponding communication system as well as to a sender and a receiver for use therein.

Abstract: A method of reporting quality metrics for packet switched streaming in a wireless network between a server and a client, comprising the step of transporting content data to the server to the client using a real time streaming protocol, the step of reporting at least one quality metric relating to the delivered data stream from the client to the server using both an unreliable transport mechanism, such as UDP, and at least one reliable transport mechanism, such as TCP.

Abstract: A method and a receiving apparatus for displaying at least one static media object delivered from a transmitting entity employing a delivery session according to the FLUTE (File Delivery over Unidirectional Transport) protocol is provided. Moreover, a computer-readable medium for storing instructions that, when executed by a processor cause the processor to display a static media object delivered from a transmitting entity to a receiving entity employing a delivery session according to the FLUTE protocol is provided. Moreover a transmitting apparatus for transmitting at least one static media object according to the FLUTE protocol is provided. A new method that allows temporally synchronizing and to update the delivered static media objects with other media objects is proposed. The proposed method may be especially suitable for the 3GPP MBMS Service as defined in 3GPP TS 22.246 specifications, but is not limited to thereto.

Abstract: An adaptive control method in real-time communication for taking measures against the conditions of the loss of a receiver report packet which is sent out from an apparatus at the side of receiving distributed data toward a distribution server, thereby achieving an appropriate data distribution adaptive to transmission path conditions and/or communication conditions: According to the method, a dynamic arrangement for the transmission interval of a receiver report packet is made between data distribution server (301) and data reception apparatus (101) Then, after starting the transmission/reception of real-time data, data distribution server (301) monitors the reception conditions of the receiver report packet in a unit of the arranged transmission interval, and then adaptively controls a data transmission rate, etc., based on a monitoring result.

Abstract: An apparatus and amethod are provided for transmitting video data to a video client. The video data is a series of video data units. A unique priority level is assigned to each video data unit that is to be transmitted. The video data units are then buffered, wherein a first part of the video data units have not yet been transmitted, and a second part of the video data units are available for retransmission. According to the embodiments, one of the buffered video data units is selected from the first and second parts, according to its priority level, and is transmitted to the video client. The embodiment allows for improving the video quality in particular when transmitting compressed video streams over unreliable links, by scheduling regular transmissions as well as retransmissions using priorities.

Abstract: The present invention relates to a method for controlling the transmission data rate of a multimedia data stream in a session-based streaming environment comprising a media server and a destination terminal, wherein a session control protocol is employed to control the multimedia data stream. Further, the present invention relates to the media server performing the method and the destination terminal adapted for communication with the media server. Finally, a media streaming system comprising at least one media server and at least one destination terminal is provided. To provide a rate control in a media streaming environment in a transparent way to the destination terminals receiving a multimedia data stream from a media server, the present invention provides an implementation of a server-based variant of the TFRC rate control algorithm by shifting all processing to the server.