Resource management strategy in an ATM network

Abstract

This paper proposes a system of realtime bandwidth management and call admission control in an ATM network, which guarantees communications quality with high reliability and control simplicity. In this call admission control system, the allocated bandwidth for each bursty class is determined by the X-percent value of the superposed bursty traffic distribution in each bursty class. Whether a requesting call is accepted or rejected is judged by the total allocated bandwidth of all bursty classes.Since the communications quality of each class can be approximately estimated from the X-percent value of the superposed bursty traffic distribution and this probability X, a method of determining the allocated bandwidth satisfying quality specification is presented by formulating the probability event that each peak state is super- Posed.Bandwidth management, where bursty classes are introduced in order to realize optimal and simple control in accordance with the traffic burstiness and a method of call admission control are also presented. Although throughput performance is too deteriorated to realize the safety-side bandwidth management, computer simulation confirms that the statistical multiplexing effect can be expected by using the proposed method. AUTHORS (from left to right) Kiyohiro Noguchi obtained a B.S. from Tohoku University in 1982 and an M.S. from there in 1984. He has been with "IT Since 1984. He has been engaged in the research and development of D51 packet switching machines and study on call control system of high-speed packet (ATM) switched networks. He is a member of IEEE. Tadanobu Okada obtained a B.S. from Kyoto University in 1974 and an M.S. From Tohoku University in 1976.He then joined NTT. He has been engaged in research and development of additional service of DDX network and its communication processing. At present, he is engaged in the research and development of ATM switching systems. He is a member of IEEE.

Dynamics of the plane and solitary waves in a Noguchi network: Effects of the nonlinear quadratic dispersion

“…Equation (8) shows that, for a wave propagating in the system to become unstable, it is necessary that K 2 cr > K 2 . K 2 cr is an explicit function of P and Q, and depends implicitly on the network parameters.…”

“…On the other hand, Noguchi built a new type of elec-trical transmission line to study experimentally the propagation of the first-order KdV solitons. [8] This network was also exploited to examine experimentally the properties of the second-order KdV solitons by using a new potential that generalized the Toda potential. [9] Based on the modified Noguchi line with linear dispersion, Pelap and Faye established a generalized criterion for the Benjamin-Feir instability and determined the exact solutions of the wave equation that governed the dynamics of the network.…”

A heuristic approach for performance analysis of ATM systems

“…W i t h o u t loss o f generality, we assume t h a t the o u t p u t link speed is unity. A s a result, the source peak rate P is also the ratio of source peak rate to link speed which is a very important parameter for resource management in an A T M network [14]. Packets have constant length, the transmission link acts as a single server and waiting packets are served i n FIFO order.…”

“…W e now proceed w i t h the approximation of the probability distribution for W. T h e distribution has an a t o m a t zero as given i n (14). T h e density is chosen so t h a t the first t w o moments fit those o f W and D which have already been determined.…”