ATM communication system with interrogation of output port servers for available handing capacity
US5448559A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 2, 1994 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | May 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5683
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An ATM communication system has an ATM switch having a plurality of input ports and a plurality of output ports, each of the input ports being fed from an input port server and each of the output ports being arranged to feed an output port server. The input port servers each have a plurality of buffer stores, one for each of the output ports to which output port data is transmitted through the switch. Each buffer store in the input port servers is arranged to interrogate the output port server with which it communicates by a bandwidth request before the transmission of data. This determines whether output port server data handling capacity is available, whereby ATM switch operation during periods of peak traffic is facilitated. The system includes a queuing arrangement for bandwidth requests received during periods when there is no available bandwidth capacity, the arrangement being such that requests are released in a predetermined order when capacity becomes available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.