Method and apparatus for N+1 packet level mesh protection

摘要

Methods and apparatus are provided for N+1 packet level mesh protection. An error correction encoder is provided for encoding message symbols, m0 through mN-1, to generate a codeword that includes the message symbols, m0 through mN-1, and one or more check symbols. The error correction encoder comprises a linear feedback shift register having one or more flip-flops to generate the check symbols after shifting the message symbols, m0 through mN-1, through the linear feedback shift register. An error correction decoder is also provided for decoding a codeword that includes message symbols, m0 through mN-1, and one or more check symbols. The error correction decoder comprises a linear feedback shift register having one or more flip-flops to generate an error symbol based on a remainder after shifting the message symbols, m0 through mN-1, and the one or more check symbols through the linear feedback shift register.

主权项

1. An error correction encoder for encoding message symbols, m0 through mN-1, to generate an error correction codeword that includes said message symbols, m0 through mN-1, and one or more check symbols, comprising:
a linear feedback shift register having one or more flip-flops to generate said check symbols for said error correction codeword after shifting said message symbols, m0 through mN-1, through said linear feedback shift register, wherein each error correction codeword includes said message symbols, m0 through mN-1, and said corresponding generated check symbols.