: evaluated stream DBP value of real-time stream
: k value from required -firm of stream
: minimum source traffic rate of node
: current source traffic rate of node
: adjusted source traffic rate of node
Pseudo-Code runs at Sink in each round
(1) if   <= 0 then// stream cannot meet end-to-end QoS requirement
(2) if     then// current source traffic rate can be reduced
(3)   
          //source traffic rate adjustment
(4) end if
(5) end if
Algorithm 2: Sink-Source node system congestion control.