Arbitration mechanism for statistically multiplexed frame relay switching system
US6466582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An arbitration mechanism is distributed among channel units of a statistically multiplexed frame relay switching system serving a plurality of access lines, the cumulative bandwidth of which exceeds that of an aggregate data link over which data is to be transported. For each access line, an arbitration code is generated. This code includes a transmit request or start bit, a calculated multibit arbitration value based upon a combination of parameters, including queuing delay and the configuration and traffic rate of the line, and an address code that identifies the physical location of the respective channel unit. All arbitration codes are readable by each frame relay channel unit via a wire-ORed bus. A channel unit participating in an arbitration cycle compares the value of its arbitration code with those of the other participants. That channel unit whose arbitration code is uniquely the largest of all arbitration participants takes ownership of the aggregate data link, transmits data, and then releases the link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.