In order to solve the problem that performance of TCP is reduced due to higher bit error rate and bandwidth asymmetry in wireless networks,we put forward a Bi-direction Flow Control mechanism(BFC).

• 针对异构网络存在的高误码率和不对称带宽等特点使TCP性能降低的问题；本文提出了一种双向流量控制机制BFC；它根据数据链路的双向通信状况；在前后向两个信道进行流量控制.