Data link layer protocol for transport of ATM cells over a wirel

Details Data link layer protocol for transport of ATM cells over a wirel Data link layer protocol for transport of ATM cells over a wirel

1995-10-10

1998-02-10

Safourek, Benedict V.

Multiplex communications

Communication over free space

Combining or distributing information via time channels

370397, 370471, 371 33, H04L 1254

Patent

active

057176892

ABSTRACT:
The present invention is a reliable data link layer protocol to transport ATM cells over a wireless point-to-point link. The protocol ensures that the cells are transported reliably by use of a sliding window transport mechanism with selective repeat automatic repeat request (ARQ) and forward error correction (FEC). The protocol minimizes ATM header overhead by means of header compression and provides per-cell FEC whose size can be changed adaptively. The protocol also provides parity cells for recovery from errors that cannot be corrected using the per-cell FEC field. The number of these cells as well as the size of a window or frame can also be adaptively changed. In addition, the window can be terminated to request an immediate acknowledgment.

REFERENCES:
patent: 4970714 (1990-11-01), Chen et al.
patent: 5490153 (1996-02-01), Gregg et al.
patent: 5583859 (1996-12-01), Feldmeier

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