Maintaining information from a damaged frame by the receiver in

Details Maintaining information from a damaged frame by the receiver in Maintaining information from a damaged frame by the receiver in

1994-08-04

1995-06-06

Envall, Jr., Roy N.

Excavating

371 31, G06F 1100

Patent

active

054228930

ABSTRACT:
A system and method for asynchronously transmitting data across fibers in a serial manner. Frames are provided as a mechanism to transmit associated data serially and tie the data being transmitted to a particular buffer set. Each buffer set maintains a state that keeps track of the progress and sequence of received frames. When transmission errors occur in the frames, the errors may affect only the information field and there is enough information in the header to identify the frame. A request can then be sent back to the other end of the fibers to retransmit the frame. Certain information in the frame header is not used to identify the frame, but is used to control the transfer of frames and identify lost frames. When a frame information field is damaged by transmission errors, this header information is retained by the receiver of the damaged frame. Retaining this information at the receiver of the damaged frame frees the sender for storing it during the transmission of each frame. Freeing the sender improves performance by removing steps for the normal error free transmission of frames.

REFERENCES:
patent: 3646518 (1972-02-01), Weinstein
patent: 4439859 (1984-03-01), Donnan
patent: 4970714 (1990-11-01), Chen et al.
IEEE Transactions on Communications vol. COM-25, No. 5, May 1977, Sindhu, pp. 473-479.

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