Method and apparatus for allocation of available bandwidth
US6587436B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5631
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transfer flow control system for a packet ATM communications system includes a plurality of nodes interconnected by transmission links. Available bandwidth allocation for data packets or cells is improved by defining a Nrm parameter to be the product of an allowable cell rate and a sampling period. Nrm is related to the number of data cells being transmitted between resource management cells in a transmission session, and is set to a number that is independent of round trip times between source and destination nodes, but varying with the allowable cell rate of the source. The allocation fairness problem is solved by normalizing the Nrm value to ensure that the inter-RM cell times for all sessions are fixed at a predetermined time interval. The selection of the predetermined time interval value is a trade-off between network overhead and the responsiveness of the traffic source to network congestion. The predetermined time interval is a function of link speed, buffer size and “burstiness” level of real time traffic sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.