Title :
A proposal for supporting variable bit rate services in a TDM circuit-switched network
Author :
Wu, Chiung-Shien ; Lin, Bao-Shuh P.
Author_Institution :
Comput. & Commun. Res. Labs., ITRI, Hsinchu, Taiwan
Abstract :
One of the great challenges for circuit switching systems to be the candidate of the broadband ISDN (integrated services digital networks) would be the supporting of variable bit rate services. Peak bit rate allocation wastes a lot of bandwidth in the case where the traffic is bursty. This paper proposes a novel approach, namely the dynamic time-slot allocation (DTSA), which provides a way of statistical multiplexing between the variable bit rate sources. The support of DTSA regarding the call admission control and switching is also described. A traffic model for characterizing the behavior of variable bit rate sources is proposed. A performance evaluation is given in terms of the segment loss rate and the statistical multiplexing gain through an analysis based on the proposed traffic model. Unlike the ATM (asynchronous transfer mode), the scheme presented might provide a smooth transition from narrowband ISDN to broadband ISDN
Keywords :
B-ISDN; circuit switching; statistical analysis; telecommunication congestion control; telecommunication traffic; TDM circuit switched network; bandwidth; broadband ISDN; bursty traffic; call admission control; circuit switching systems; dynamic time-slot allocation; integrated services digital networks; peak bit rate allocation; performance evaluation; segment loss rate; statistical multiplexing gain; switching; traffic model; variable bit rate services; variable bit rate sources; Asynchronous transfer mode; B-ISDN; Bandwidth; Bit rate; Circuits; ISDN; Proposals; Switching systems; Time division multiplexing; Traffic control;
Conference_Titel :
Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/GLOCOM.1995.502021