Device and method for controlling dissemination of contents between peers having wireless communication capacities, depending on impatience reaction functions

摘要

A method is intended for controlling dissemination of content in a peer-to-peer mode between peers having wireless communication capacities. This method consists, each time a peer receives a content item it had requested and which is associated to a request counter, in creating at least one set of instructions intended for allowing replication of this content item by this peer, and in authorizing this peer to generate at most N replications of this content item for other peers it will meet and which does not possess it, where N is an integer value depending on the current value of this request counter and of an impatience reaction function which is representative of the mean time these peers are ready to wait for obtaining this content item.

主权项

1. A method for controlling dissemination of content in a peer-to-peer network comprising mobile peers having wireless communication capacities, wherein in said peer-to-peer network, some time delay exists between a time at which a mobile peer requests a content item and the time at which said mobile peer obtains said content item, and, each time a peer receives a content item said peer had requested and which is associated to a request counter, the method comprises the steps of:
i) storing said content item into a cache memory of said peer; ii) authorizing said peer to generate at most N replications of said content item for other peers said peer will meet and which does not possess said content item, where N is an integer value depending on a current value V1ri of said request counter and of an impatience reaction function fi representative of the mean time said peers are ready to wait for obtaining said content item, and iii) associating a replication counter to said content item, with an initial value V2ri equal to N, for said peer, and each time said peer generates a replication of a content item associated to a replication counter and stored into said cache memory, the value V2ri of said replication counter is decremented by one, and when said replication counter value V2ri becomes equal to 0, said replication counter is deleted.