Backwards Explicit Congestion Notification ( BECN ) Rm-cell may be generated by the network or the destination .
后向明确拥塞通知（BECN）源管理（RM）信元可以由网络或目的设备生成。
The characteristic relations has becn developed and it is very suitable to use the Courant difference method with the guarantee condition of convergence .
Backward ECN ( BECN ) suggests a congested router to directly return the congestion information to the sender through ICMP source quench ( ISQ ) messages to reduce the reaction time to congestion .
In this thesis , the advantages and disadvantages of the current prevalent congestion control algorithms are discussed in detail . Based on some general AQM algorithms such as RED , REM , RED / ECN and RED / BECN , an improved congestion control scheme is proposed .
Since both ECN and BECN have advantages and disadvantages , the combination may to enhance the effectiveness of the congestion indication . The algorithm can be compatible with Relative Rate Marking Algorithm , that is to say the algorithm can also work well in the relative rate marking switch .
