Methods for achieving target loss ratio

A data transmission network for transmitting Transmission Control Protocol (TCP) data segments related to a TCP session between a source end-station and a destination end-station over the data transmission network via an encoded TCP channel between two fixed intercepting network devices, intercepting network device A and intercepting network device B, both of which contain a hardware processor or other hardware to implement the functions described herein, the data transmission network comprising:

• said encoded TCP channel established between said fixed intercepting network devices using a native TCP between said fixed intercepting network devices, said intercepting network device A being interposed between said source end-station and the data transmission network, said intercepting network device B being interposed between the destination end-station and the data transmission network, said intercepting network device A:
• intercepting a TCP data segment from said TCP session,
• segmenting and encoding said intercepted TCP data segment at a packet encoding level and transmitting the encoded segments to intercepting network device B,
• receiving a recommended packet encoding level for said TCP session,
• setting the packet encoding level to a minimum level between said recommended packet encoding level and a highest unlocked packet encoding level,
• performing a first sequence of analyzing one or more of the goodput, throughput, sequence numbers, segments, transaction and state of said native TCP performance and calculating performance measurements based on said analysis,
• setting the packet encoding level to said recommended encoding level,
• performing a second sequence of analyzing one or more of the goodput, throughput, sequence numbers, segments, transaction and state of said native TCP performance and calculating performance measurements based on said analysis,
• comparing said first and second sequences of performance measurements include round trip time (RTT) and goodput, and
• determining said second sequence of performance measurements is same or better than said first sequence of performance measurements,
• setting the packet encoding level to said recommended encoding level for a predetermined amount of time based on the determined said second sequence of performance measurements is same or better than said first sequence measurements,
• determining said second sequence of performance measurements is neither same nor better than said first sequence of performance measurements,
• banning said recommended and higher packet encoding levels based on the determined said second sequence of performance measurements is neither same nor better than said first sequence of performance measurements, and
• unlocking lowest of banned packet encoding levels after expiration of a predetermined time period.