Providing admission control and network quality of service with a distributed bandwidth broker
US6487170B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1998 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Nov 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1881
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for making admission decisions in a packet switched network, such as a Differentiated Services (DiffServ) Packet Network. According to one aspect of the present invention, admission control decisions are based upon local information. An average premium service bandwidth utilized on an output link of a network device during a predetermined window of time is calculated. A determination regarding whether to accept or reject a request for a premium service flow involving the output link is made based upon the request, a total premium service bandwidth available on the output link, the average premium service bandwidth, and bandwidth request information associated with one or more flows that have been admitted within a predetermined holding time interval. According to another aspect of the present invention, multicast flows are supported. A measure of utilized premium service bandwidth is calculated for each of the output links of a multicast-capable network device. A request for premium service bandwidth for a multicast session is forwarded onto those of the output links specified by a multicast routing protocol which have sufficient premium service …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.