Abstract: A method of allocating data transmission channels to a mobile station, in particular in half-duplex mode, in a mobile telecommunications network of the type using packet mode and having multiple access by multiplexing transmission channels, in which method the transmission channels allocated to a mobile station, respectively in a “down” direction from the network to the mobile station, and in an “up” direction from the mobile station to the network, can change at each “allocation period”, a transmission authorization received over a transmission channel in the down direction for a given allocation period indicating that the transmission channel is allocated in the up direction for the following allocation period; wherein a transmission authorization received over a transmission channel in the down direction for a given allocation period indicates that not only the transmission channel, also referred to as the authorization channel, but also consecutive transmission channels

Abstract: An Asynchronous Transfer Mode (ATM) switch (8) and method of operating the same to allocate Available Bit Rate (ABR) communications therethrough. The switch receives resource management (RM) cells over a sequence of measurement periods. A plurality of rate levels are defined, each associated with a measurement period of a corresponding duration; the measurement periods being nested. Saved and current values of the number of flows associated with each level, and saved and current values of the aggregate rates of these flows, are retained in memory. RM cells are received during the various measurement periods, and the various numbers and aggregate rates are maintained for each rate level, including the use of estimates for flows that have changed rate level. A bottleneck rate is determined as the larger of the ratio of ABR bandwidth to ABR flows, or the largest cell rate plus surplus bandwidth derived according to this sum.