Choon Hee Kim, Young Wook Cha, Ki Jun Han

The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 7, No. 9, pp. 2948-2957, Sep. 2000
10.3745/KIPSTE.2000.7.9.2948,   PDF Download:

Abstract

A broadband access network in B-ISDN subscriber network, plays a role of concentration or multiplexing of various subscribers into a service node. To establish an end-to-end ATM connection, interworking functions between VB5.2 interface''s connection protocol and the signalling protocol, are performed at the service node. A sequential interworking model and a parallel interworking model were proposed for these interworking functions. The sequential interworking model proceeds the signalling protocol of network node after the response of VB5.2 interface protocol. On the other hand, the parallel interworking model proceeds the signalling protocol and the VB5.2 interface protocol simultaneously. In this paper, we analyze and simulate above two interworking models in terms of a connection setup delay and completion ratio, when call requests with CBR and VBR transfer capability arrive at the service node. We observed that the completion ratios of the two interworking models are quite closed. However the connection setup delay of parallel interworking model is improved by about 33% compared with that of the sequential interworking model.

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