Fast connection admission control for ATM networks

Details Fast connection admission control for ATM networks Fast connection admission control for ATM networks

1993-08-24

1994-10-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, H04J 312, H04J 322

Patent

active

053575075

ABSTRACT:
Connection admission control (CAC) is a key traffic control function for future asynchronous transfer mode (ATM) networks. It is required to determine whether or not the network has sufficient resources to accept a new connection. This decision is based on the predicted quality of service after accepting the new connection. A connection admission control method of the present invention is faster and/or more accurate than other methods which have been proposed. It involves precomputing an upper and lower bounds to an admission surface. Calls can be accepted when the operating point is below the lower bound. Calls must be rejected when the operating point is above the upper bound. A more detailled method for deciding whether to accept the connection when the operating point is between the two bounds is also disclosed.

REFERENCES:
patent: 4984264 (1991-01-01), Katsube
patent: 5153877 (1992-10-01), Esaki et al.
patent: 5166894 (1992-11-01), Saito
Murase, T., et al., "A Call Admission Control Scheme for ATM Networks Using a Simple Quality Estimate", IEEE Journal on Selected Areas in Communications, vol. 9, pp. 1461-1470, Dec. 1991.
Rasmussen, C., et al., "Source-Independent Call Acceptance Procedures in ATM Networks", IEEE Journal on Selected Areas in Communications, vol. 9, No. 3, pp. 351-358, Apr. 1991.
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Appleton, J., "Modelling a Connection Acceptance Strategy for Asynchronous Transfer Mode Networks", 7th ITC Specialist Seminar, New Jersey, Oct. 1990.
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Miyao, Y., "A Dimensioning Scheme in ATM Networks", Networks '92 Kobe, pp. 171-176, May 1992.

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