Congestion control method and system in an exchange
US6275572A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/0091
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is provided to improve congestion control without changing a quality of a connection service of communications even if congestion occurs and realize a flexible correspondence. The congestion control method, comprising the steps of generating a call pattern as time series data of calls from a subscriber, performing Fast Fourier transformation on the time series data of the calls to detect short periodic component of a frequency, delaying the detected short periodical component with a prescribed threshold, and delaying a timing of sending a congestion tone (CT) or busy tone (BT) when the value of the short periodical component exceeds the prescribed threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.