Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Patent
1995-03-16
1996-12-10
Chin, Wellington
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
370234, 370253, H04L 1256
Patent
active
055838570
ABSTRACT:
A connection admission control method for allocating many calls to a transmission line while guaranteeing the quality of service such as the cell loss ratio, where an average cell rate/peak cell rate comparator judges that a call requesting admission has a variable-speed traffic property when the average cell rate Ra and the peak cell rate Rp which are declared by the user are different. A traffic class judging portion determines the traffic class to which the call belongs on the basis of the peak cell rate. A required bandwidth calculator obtains the required bandwidth for guaranteeing the quality on the basis of the sum of the average cell rate of the call requesting admission and the average cell rates of all the calls that belong to the traffic class and that are already allocated to a transmission line, and outputs the calculated bandwidth as the estimated bandwidth. An estimated bandwidth calculator for calls having a variable-speed traffic property calculates the estimated total bandwidth for all the traffic classes, and a call admission judging portion judges whether or not there is a vacant bandwidth in the transmission line which is necessary for accepting the call requesting admission with consideration of the calculated estimated total bandwidth and the physical bandwidth, and accept the call if vacant bandwidth exists, otherwise reject the call.
REFERENCES:
patent: 5280483 (1994-01-01), Kamoi et al.
patent: 5335222 (1994-08-01), Kamoi et al.
patent: 5341366 (1994-08-01), Soumiya et al.
patent: 5357507 (1994-10-01), Hughes et al.
patent: 5390184 (1995-02-01), Morris
Katoh Masafumi
Soumiya Toshio
Watanabe Naotoshi
Carman Melissa Kay
Chin Wellington
Fujitsu Limited
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