Peer-to-peer method of quality of service (QoS) probing and analysis and infrastructure employing same
US7133368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2002 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Aug 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.