DISTRIBUTED PRESENCE MANAGEMENT IN PEER-TO-PEER NETWORKS

• US 20080019291A1
• Filed: 07/18/2007
• Published: 01/24/2008
• Est. Priority Date: 07/20/2006
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: SIENEL, Jurgen, DOMSCHITZ, Peter, TOMSU, Marco
• Granted Patent: US 7,876,698 B2
• Time in Patent Office: Days
• US Class Current: 370/258
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1048 Departure or maintenance mechanisms
• CPC Class Codes: H04L 67/54 Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users

Abstract

The invention concerns a computer software product comprising a plurality of peers (2′, 4, 5) adapted to participate in a peer-to-peer network where the computer software product comprises detection means for detecting actual presence information of a peer and where the computer software product comprises retrieval means for retrieving actual information about the peer, where the detection means is located on neighbour partner peer (4) of the peer (5) for detecting continuously whether the peer provides still actual information and the computer software product comprises propagation means for outdating the information about this peer in case of detecting that the peer is not alive.

The invention further concerns a network device and a method therefore.

Claims

1. A computer software product comprising a plurality of peers adapted to participate in a peer-to-peer network where the computer software product comprises detection means for detecting actual presence information of a peer and where the computer software product comprises retrieval means for retrieving actual information about the peer, wherein the detection means is located on neighbour partner peer of the peer for detecting continuously whether the peer provides still actual information and the computer software product comprises propagation means for outdating the information about this peer in case of detecting that the peer is not alive.

2. The computer software product according to claim 1, wherein the peer-to-peer network has a chord-like ring topology where the neighbour partner peer is a predecessor or a successor.

3. The computer software product according to claim 1, wherein the peer-to-peer has a hierarchical topology of layers and a neighbour partner peer has the same layer and where the information about this peer is propagated through the hierarchy.

4. A method for providing actual presence information about a peer of a plurality of peers that form a peer-to-peer network, where the method comprising the steps of detecting actual presence information of a peer, providing and retrieving the actual information about the peer, wherein the detecting is distributed to a neighbour partner peer of a peer with respect to the topology of the peer-to-peer network and a neighborhood partner peer detects continuously whether its peer disappears and propagates actual presence information when detecting a disappearing of its peer to other peers.

5. A network device of a telecommunication network, the node comprising at least a peer adapted to participate in a peer-to-peer network, wherein the peer is adapted to perform the method according to claim 4.