Abstract: A method and nodes in a communication network for controlling multi-cast delivery of files, wherein the multi-cast delivery is adapted to reduce the amount of required uni-cast file deliveries in the communication network. A browser of an IPTV Terminating Function requiring a file interrogates a cache of the IFT for the file content before a uni-cast request for file delivery is sent to an Application Service Platform. The files stored in the cache have been previously delivered to the IFT via the proposed multi-cast mechanism. If the file content is not stored in the cache, a uni-cast request is sent to the ASP. Each uni-cast request is also forwarded to a Multi-Cast Controller, which determines whether the requested file should be sent also to a plurality of additional IFTs on a multi-cast channel. At each IFT, listening to the multi-cast channel, the received content can be handled selectively according to a filtering mechanism, and a received file may, e.g. be stored in the cache for later retrieval.

Abstract: The present invention involves traffic management in a communication system (1) comprising multiple communication terminal (10, 200) that each has data flows presented in transmit buffers (14, 220). The terminals (10, 200) utilize a default priority scheme for selecting data from the buffers (14, 220) to transmit at transmission occasions determined by a schedule scheme. A switching event is detected based on information of an estimate distribution of data flows in a first portion (2) of the system (1). A priority scheme update message is generated based on this event detection. The update message comprises information of a temporary priority scheme that is to be used by terminals (10, 200) in a second portion (2; 5) of the system (1). By using this temporary scheme that assigns new temporary priorities to the data flows, a local shaping of the transmission pattern and data flow distribution in the second system portion (2; 5) is possible.

Abstract: The present invention involves traffic management in a communication system (1) comprising multiple communication terminal (10, 200) that each has data flows presented in transmit buffers (14, 220). The terminals (10, 200) utilize a default priority scheme for selecting data from the buffers (14, 220) to transmit at transmission occasions determined by a schedule scheme. A switching event is detected based on information of an estimate distribution of data flows in a first portion (2) of the system (1). A priority scheme update message is generated based on this event detection. The update message comprises information of a temporary priority scheme that is to be used by terminals (10, 200) in a second portion (2; 5) of the system (1). By using this temporary scheme that assigns new temporary priorities to the data flows, a local shaping of the transmission pattern and data flow distribution in the second system portion (2; 5) is possible.