Method and system for implementing sub-tokens on a token ring network
US5528594A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/433
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for increasing performance on a standard dual ring token ring by generating one or more sub-tokens so that multiple data transmissions can occur concurrently. Upon receipt of a data frame from the token holder, interface logic enables a receiver to generate a sub-token frame. The sub-token is used to notify the next downstream station that it may transmit data frames to other downstream stations. In this way, a second data transmission path can be established between downstream stations. In a similar manner, the receiver of a data frame sent by a sub-token owner will generate a sub-token frame for use by the next downstream station when its data arrives. Each sub-token is used to create a new sub-ring, thus allowing for concurrent data transmissions. Each new sub-ring must obey token ring protocol to avoid data collisions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.