Asynchronous transfer mode adaptation layer (AAL) processing method
US6262995A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Apr 1, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5658
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An asynchronous transfer mode adaptation layer (AAL) processing apparatus using a central processing unit in an asynchronous transfer mode (ATM) terminal includes: a physical layer for performing physical functions and supporting universal test and operations physical interface for ATM (UTOPIA); a software segmentation and reassembly interface device (SSID) for storing ATM cells outputted by the physical layer in a double port RAM under the control of a central processing unit and outputting to the physical layer the ATM cells, which have been stored in the double port RAM by the central processing unit, under the control of the central processing unit; a double port RAM for storing the ATM cells depending upon the control of the central processing unit or the SSID; a system memory for temporarily storing the ATM cells of the central processing unit; and a central processing unit, for storing in the double port RAM the user data, produced by reassembly of the ATM cells stored in the double port RAM, for storing in the double port RAM the ATM cells produced by segmentation of the user data stored in the double port RAM, and for controlling the overall system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.