Patent ID: 6597659
Filing Date: 2003-07-22
Classification: H04L,H04Q

Abstract:
Method of controlling the conformity of the transmission rate of data cells transmitted by a source terminal in communication with a destination terminal, via a high-speed network, the said network having user-network interface units to which the said terminals are connected, the said source terminal periodically transmitting a so-called resource management cell which is returned by the destination terminal to the said source terminal in the form of a so-called backward-resource management cell, the said resource management cell comprising a control process including verifying the conformity of the rate of the cells transmitted by the said source terminal with a rate programmed by a process known as a programming process, the said programming process including at the arrival of a backward-resource management cell of order k at the said interface unit, of determining the time, referred to as the programming time (tp(k)), of the taking into account, by the said control process, of the rate request (ER(k)) included in the field of the said cell, the said programming time being equal to the said arrival time (tb(k)) delayed by thne minimum forward-backward delay (&tgr;3) between the interface and the terminal, referred to as the closest programming time, in response to said taking into account at this closest programming time results in an increase in programmed rate and being greater than the closest programming time and less than the said arrival time (tb(k)) delayed by a maximum forward-backward delay (&tgr;2), (tb(k)+&tgr;2) being referred to as the furthest away programming time, if its taking into account at the said closest programming time (tb(k)+&tgr;3) had resulted in a reduction in transmission rate and, transmitting, at the expiry of the programmed time (tp(k)), the said value of rate to be controlled (ACR(tp(k))) to said control process for controlling the flow sent by the said source terminal.