Checksum Restriction Based Robust IPv4 Header Recovery

When packed loss caused by bit error occurs in the data transmission of IP network, one should retransmit the corrupted data to avoid information loss. However, this will take more damage for those business in which retransmission is difficult to realize or will limit the performance of system. In order to reduce this damage, this paper studied the checksum restriction mechanism of the IPv4 header and the relationship between the check and bit error. Based on this, we proposed the checksum restriction based robust IPv4 header recovery algorithm. We can find that this algorithm can increase the amount of corrected IPv4 headers through the experimental result.