Abstract: The invention introduces a method to inform/configure a peer-to-peer application environment such that an application can find good alternatives for peer selection and data exchange taking the network configuration conditions including caching strategies and deployment into account. In use, a mobile operator stores a tracker file that is used to provide information of likely locations of a data file sought by an end user. The mobile operator provides instructions to a mobile communication device of the end user regarding the location of a tracker file that is available for use by said mobile communication device. In this way, the mobile operator controls the peer-to-peer environment available to the end user.

Abstract: The invention introduces a method to inform/configure a peer-to-peer application environment such that an application can find good alternatives for peer selection and data exchange taking the network configuration conditions including caching strategies and deployment into account. In use, a mobile operator stores a tracker file that is used to provide information of likely locations of a data file sought by an end user. The mobile operator provides instructions to a mobile communication device of the end user regarding the location of a tracker file that is available for use by said mobile communication device. In this way, the mobile operator controls the peer-to-peer environment available to the end user.

Abstract: A method for caching data is disclosed, in which a network apparatus (401) partitions (600) the data into chunks to be stored in at least one priority cache and in at least one secondary cache. In response to receiving (602), in the network apparatus (401) a content request message (601) related to a user terminal (403), the apparatus checks (602) whether prioritized chunks of the requested content are available in a priority cache, the apparatus transmits (603) the prioritized chunks of the content from the priority cache to the user terminal (403). The apparatus (401) also retrieves non-prioritized chunks of the content to the priority cache from a secondary cache, wherein the retrieved non-prioritized chunks are transmitted (605) to the user terminal (403).