Patent ID: 7027401

Claim:
Packet switching data communications network with closed loop implicit feedback flow control comprising a Window-Time-Space Flow Control, WTFC, where a determined single server queuing system model with a finite number of packets and known value of a total network capacity point W 0 ,T 0 of a total network window W 0 , a total serving time T 0 and an aggregated propagation time T p define a window-time plane of a packet window W and a delay time T, for determining a hyperbola through said network capacity point W 0 ,T 0 and a set of network response curves each for a fraction of total network capacity α, said hyperbola and said curves contained in said window-time plane, wherein each said response curve is determined with a break point lying on said hyperbola through said network capacity point W 0 ,T 0 , and a current W,T point measurement, wherein said window-time plane is used to determine whether a W,T point is positioned above or below said hyperbola, and to calculate optimal value of said capacity fraction cc and said break point of the current response curve, wherein said break point is used to calculate an optimal window W 0 (α), an optimal delay time T 0 (α), and an optimal packet sending period t′″(α); a terminal that uses said window-time plane and said W,T point measurement to obtain said optimal packet sending period and said optimal window, and is constructed using a packet receiver ( 113 ) and a packet transmitter ( 101 ) of packets or other data units; a node ( 201 ) that may signal said total network capacity W 0 ,T 0 by updating a set of elementary network channel parameters in packet headers, wherein said network parameters are a cumulative propagation time T p0 , a cumulative reciprocal capacity and a minimal channel capacity C b .