Upstream bandwidth estimation
US7706299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2004 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique for estimating the upstream bandwidth for a modem is provided. Various-sized packets are sent on roundtrip journeys through the modem. The roundtrip times for the various-sized packets are compared to provide an estimate of the modem's upstream bandwidth. Alternatively, a block file may be transmitted through the modem to a TFTP server. The TFTP server reports the time needed to complete the file transfer. Based upon the block file transmission start time and the completion time, an upstream bandwidth estimate may be performed. Given the upstream bandwidth estimation, non-VoIP upstream data traffic may be limited accordingly to provide a desired QoS to VoIP calls being supported by the modem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.