ATM exchange for monitoring congestion and allocating and transmitting bandwidth-guaranteed and non-bandwidth-guaranteed connection calls
US5936958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Oct 8, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5682
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
For both a bandwidth-guaranteed connection call and a non-bandwidth-guaranteed connection call together, with respect to the bandwidth-guaranteed connection call, a schedular allocates the number of time slots which correspond to a required bandwidth to the bandwidth-guaranteed connection call from among the N time slots that constitute one period and so controls as to transmit an ATM cell at an allocated time slot. The non-bandwidth-guaranteed call transmitting unit transmits an ATM cell of a non-bandwidth-guaranteed connection call at a time slot which is not allocated to any bandwidth-guaranteed connection call. A congestion/normal state monitoring unit sets in advance a queue length which is regarded as the occurrence of a long-term congestion in a queuing buffer and compares the actual queue length with the preset queue length so as to detect the occurrence of a long-term congestion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.