초록 ▼

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 metho

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.

대표청구항 ▼

What is claimed is: 1. A method for controlling 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 of the mobile communication system, the method being p

What is claimed is: 1. A method for controlling 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 of the mobile communication system, the method being performed by at least one of the mobile terminals to reduce uplink traffic in the mobile communication system and comprising:receiving the multicast or broadcast service via a unidirectional downlink channel using an unreliable transport protocol and using Real Time Protocol (RTP),receiving a parameter comprising a probability value based on which the mobile terminal decides whether to provide feedback to the feedback control entity,deciding whether or not to provide the feedback for the multicast or broadcast service to the feedback control entity based on the received parameter,establishing a bearer for providing feedback to the feedback control entity only in case the deciding step comprises a decision to provide the feedback, andtransmitting the feedback, wherein the feedback indicates reception statistics of said multicast or broadcast service, to the feedback control entity via said established bearer.