Method for flow control in asymmetric digital subscriber line devices
US6542465B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1999 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/193
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for flow control in asymmetric digital subscriber line (“ADSL”) devices. The method includes flow control that adapts to changes in line conditions such as noise signals, onhook/offhook signals, etc. that may result in degradations in the quality-of-service in an ADSL system. The flow control includes buffering outbound data and ceasing transmission of data at an original transmission rate on an ADSL device that is used on a customer site. An original data transmission rate is adjusted based on changes in line conditions. One more or data transmission characteristics may be adjusted before sending any data at a new data transmission rate. For example, Asynchronous Transport Mode (“ATM”) often uses ADSL devices as a physical layer to transmit data. ATM available bit-rate, constant bit-rate, variable bit-rate or unspecified bit-rate transmission characteristics or ATM quality-of -service characteristics may be adjusted before sending any data at a new data transmission rate. Traffic shaping may be optionally applied to the data at the new data transmission rate. The method may be especially useful for maintaining a quality-of-service transmission at a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.