redendant schechuler transmits reapeated packet

[ken32293355]

Hello, the goodput seems to be good now. However, the multiple retransmissions problem still exists when throuput setting is a little high (ex: 2Mbps). Although the goodput works as expected, many packets are dropped due to multiple retransmissions.

The multiple retransmissions problem disappear when the throughput setting is slow (0.2 Mpbs).

Thanks

Originally posted by @ken32293355 in #474 (comment)